Como procurar virus no imac ?

Meu Imac está extremamente lento. Como ver se é em função de algum virus?

Did you try to Sync Contacts with Contacts tab in iTunes

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What best free anti-virus for imac?, What best free anti-virus for imac?

What best free anti-virus for imac?,

There are no viruses that can affect Apple OS X, but Trojans are a different matter.
Please read on:
You may find this User Tip on Viruses, Trojan Detection and Removal, as well as general Internet Security and Privacy, useful:
https://discussions.apple.com/docs/DOC-1848
Regarding MacScan, First update the MacScan malware definitions before scanning. You can also contact their support team for any additional support - [email protected]
Security of OS X generally:
http://www.apple.com/macosx/security/
http://www.nsa.gov/ia/_files/os/applemac/I731-007R-2007.pdf
Security Configuration for Version 10.5 Leopard:
http://images.apple.com/server/macosx/docs/Leopard_Security_Config_2nd_Ed.pdf
This Blog entry is also worth a read:
http://blog.damballa.com/?p=1055

Como compartir archivos de imac a mac book air?

como compartir archivos de imac a mac book air?

como compartir archivos de imac a mac book air?

How to tell if you have a virus on imac

I sent an email with a word document attachment created by myself and was told by the recipient that it contained a virus. how are we able to see if we have a virus or Trojan we have an imac. can we carry out some system check?

I suspect your recipient's computer is in error.
Helpful Links Regarding Malware Protection
An excellent link to read is Tom Reed's Mac Malware Guide.
Also, visit The XLab FAQs and read Detecting and avoiding malware and spyware.
See these Apple articles:
          Mac OS X Snow Leopard and malware detection
          OS X Lion- Protect your Mac from malware
          OS X Mountain Lion- Protect your Mac from malware
          About file quarantine in OS X
If you require anti-virus protection I recommend using VirusBarrier Express 1.1.6 or Dr.Web Light both from the App Store. They're both free, and since they're from the App Store, they won't destabilize the system. (Thank you to Thomas Reed for these recommendations.)

Best anti virus for imac

Just got new iMac, looking for advice on best recommended anti-virus to use? Thanks

If you are a former Windows user, the first thing you must do is rid yourself of the assumption that a Mac needs the same daily maintenance that Windows PCs require just to keep them operating. The vast majority of Mac-related problems reported on this site are the direct result of installing ill-conceived "anti-virus" or "security" garbage. If you don't want to come back here wondering why your Mac is running like a sick dog then avoid all such junk.
Intego VirusBarrier in particular caused a brand new Mac containing nothing other than Mavericks and one minimally configured User account became practically unusable with frequent beachballs, intermittent unresponsiveness, and an occasional momentary black screen. No experienced Mac user would consider such behaviour acceptable.
Macs are designed to be used, not pampered and fussed over constantly. Installing extra "anti-virus" or "cleaning" apps is only likely to cause problems, despite what their developers claim. The most highly visible and aggressively marketed products are often nothing more than scams.
Just got new iMac, looking for advice on best recommended anti-virus to use?
OS X already includes everything it needs to protect itself from viruses and malware. Keep it that way with software updates from Apple.
A much better question is "how should I protect my Mac":
Never install any product that claims to "speed up", "clean up", "optimize", or "accelerate" your Mac. Without exception, they will do the opposite.
Never install pirated or "cracked" software, software obtained from dubious websites, or other questionable sources. Illegally obtained software is almost certain to contain malware.
Don’t supply your password in response to a popup window requesting it, unless you know what it is and the reason your credentials are required.
Don’t open email attachments from email addresses that you do not recognize, or click links contained in an email:
Most of these are scams that direct you to fraudulent sites that attempt to convince you to disclose personal information.
Such "phishing" attempts are the 21st century equivalent of a social exploit that has existed since the dawn of civilization. Don’t fall for it.
Apple will never ask you to reveal personal information in an email. If you receive an unexpected email from Apple saying your account will be closed unless you take immediate action, just ignore it. If your iTunes or App Store account becomes disabled for valid reasons, you will know when you try to buy something or log in to this support site, and are unable to.
Don’t install browser extensions unless you understand their purpose. Go to the Safari menu > Preferences > Extensions. If you see any extensions that you do not recognize or understand, simply click the Uninstall button and they will be gone.
Don’t install Java unless you are certain that you need it:
Java, a non-Apple product, is a potential vector for malware. If you are required to use Java, be mindful of that possibility.
Disable Java in Safari > Preferences > Security.
Despite its name JavaScript is unrelated to Java. No malware can infect your Mac through JavaScript. It’s OK to leave it enabled.
Block browser popups: Safari menu > Preferences > Security > and check "Block popup windows":
Popup windows are useful and required for some websites, but popups have devolved to become a common means to deliver targeted advertising that you probably do not want.
Popups themselves cannot infect your Mac, but many contain resource-hungry code that will slow down Internet browsing.
If you ever see a popup indicating it detected registry errors, that your Mac is infected with some ick, or that you won some prize, it is 100% fraudulent. Ignore it.
Ignore hyperventilating popular media outlets that thrive by promoting fear and discord with entertainment products arrogantly presented as "news". Learn what real threats actually exist and how to arm yourself against them:
The most serious threat to your data security is phishing. To date, most of these attempts have been pathetic and are easily recognized, but that is likely to change in the future as criminals become more clever.
OS X viruses do not exist, but intentionally malicious or poorly written code, created by either nefarious or inept individuals, is nothing new.
Never install something without first knowing what it is, what it does, how it works, and how to get rid of it when you don’t want it any more.
If you elect to use "anti-virus" software, familiarize yourself with its limitations and potential to cause adverse effects, and apply the principle immediately preceding this one.
Most such utilities will only slow down and destabilize your Mac while they look for viruses that do not exist, conveying no benefit whatsoever - other than to make you "feel good" about security, when you should actually be exercising sound judgment, derived from accurate knowledge, based on verifiable facts.
Do install updates from Apple as they become available. No one knows more about Macs and how to protect them than the company that builds them.
Summary: Use common sense and caution when you use your Mac, just like you would in any social context. There is no product, utility, or magic talisman that can protect you from all the evils of mankind.

Anti virus for iMac with OS X Lion

Hi;
I have an iMac with OS X Lion,I'd like to know if Apple really offer a free anti virus for me, or if not so , where can I find a proper anti virus for my iMac?
Best regards;
Lama Yahya

VIRUSES
No viruses that can attack OS X have so far been detected 'in the wild', i.e. in anything other than laboratory conditions.
It is possible, however, to pass on a Windows virus to another Windows user, for example through an email attachment. To prevent this all you need is the free anti-virus utility ClamXav, which you can download for Tiger and Leopard from:
http://www.clamxav.com/
The new version for Snow Leopard and Lion is available here:
http://www.clamxav.com/index.php?page=v2beta
Note: ClamAV adds a new user group to your Mac. That makes it a little more difficult to remove than some apps. You’ll find an uninstaller link in ClamXav’s FAQ page online.
If you are already using ClamXav: please ensure that you have installed all recent Apple Security Updates and that your version of ClamXav is the latest available.
Do not install Norton Anti-Virus on a Mac as it can seriously damage your operating system. Norton Anti-Virus is not compatible with Apple OS X.
FAKE ANTI-VIRUS SOFTWARE and associated MALWARE
Do not be tricked by 'scareware' that tempts computer users to download fake anti-virus software that may itself be malware.
Fake anti-virus software that infect PCs with malicious code are a growing threat, according to a study by Google. Its analysis of 240m web pages over 13 months showed that fake anti-virus programs accounted for 15% of all malicious software.
Scammers trick people into downloading programs by convincing them that their PC is infected with a virus.
Once installed, the software may steal data or force people to make a payment to register the fake product.
Beware of PDF files from unknown sources. A security firm announced that by its counting, malicious Reader documents made up 80% of all exploits at the end of 2009.:
http://www.computerworld.com/s/article/9157438/in which Rogue_PDFs_account_for_80_of_all_exploits_says_researcher
TROJANS and RE-DIRECTION TO FAKE WEBSITES
The appearance of Trojans and other malware that can possibly infect a Mac seems to be growing, but is a completely different issue to viruses.
If you allow a Trojan to be installed, the user's DNS records can be modified, redirecting incoming internet traffic through the attacker's servers, where it can be hijacked and injected with malicious websites and pornographic advertisements. The trojan also installs a watchdog process that ensures the victim's (that's you!) DNS records stay modified on a minute-by-minute basis.
You can read more about how, for example, the OSX/DNSChanger Trojan works (by falsely suggesting extra codecs are required for Quicktime) here:
http://www.f-secure.com/v-descs/trojan_osx_dnschanger.shtml
SecureMac has introduced a free Trojan Detection Tool for Mac OS X. It's available here:
http://macscan.securemac.com/
First update the MacScan malware definitions before scanning. You can also contact their support team for any additional support - [email protected]
The DNSChanger Removal Tool detects and removes spyware targeting Mac OS X and allows users to check to see if the trojan has been installed on their computer; if it has, the software helps to identify and remove the offending file. After a system reboot, the users' DNS records will be repaired.
(Note that a 30 day trial version of MacScan can be downloaded free of charge from:
http://macscan.securemac.com/buy/
and this can perform a complete scan of your entire hard disk. After 30 days free trial the cost is $29.99. The full version permits you to scan selected files and folders only, as well as the entire hard disk. It will detect (and delete if you ask it to) all 'tracker cookies' that switch you to web sites you did not want to go to.)
A white paper was published on the subject of Trojans by SubRosaSoft, available here:
http://www.macforensicslab.com/ProductsAndServices/index.php?main_page=document_ general_info&cPath=11&products_id=174
Also, beware of MacSweeper and MacDefender (also goes under the name of MacProtector, MacGaurd, MacSecurity or MacShield) :
These are malware that misleads users by exaggerating reports about spyware, adware or viruses on their computer in an attempt to obtain payment.
Mackeeper is equally worthless and should also be avoided. Again, the developer seeks to obtain payment for an application that does nothing that free utilities do not also offer, and in many cases it will also mess up your system.
You can keep up to date, particularly about malware present in some downloadable pirated software, at the Securemac site:
http://www.securemac.com/
HOW TO AVOID RE-DIRECTION
Adding Open DNS codes to your Network Preferences, should give good results in terms of added security as well as speed-up:
Open System Preferences/Network. Double click on your connection type, or select it in the drop-down menu, and in the box marked 'DNS Servers' add the following two numbers:
208.67.222.222
208.67.220.220
(You can also enter them if you click on Advanced and then DNS)
Sometimes reversing the order of the DNS numbers can be beneficial in cases where there is a long delay before web pages start to load, and then suddenly load at normal speed:
http://support.apple.com/kb/TS2296
There may be other ways of guarding against Trojans, viruses and general malware affecting the Mac, and alternatives will probably appear in the future. In the meantime the advice is: be careful where you go on the web and what you download!
WHAT TO DO IF YOU THINK YOUR MAC HAS BECOME 'INFECTED'
If you think you may have acquired a Trojan, and you know its name, you can also locate it via the Terminal:
http://theappleblog.com/2009/04/24/mac-botnet-how-to-ensure-you-are-not-part-of- the-problem/
Although any content that you download has the possibility of containing malicious software, practising a bit of care will generally keep you free from the consequences of anything like the DNSChanger trojan.
1. Avoid going to suspect and untrusted Web sites, especially p'orn'ography sites.
2. Check out what you are downloading. Mac OS X asks you for you administrator password to install applications for a reason! Only download media and applications from well-known and trusted Web sites. If you think you may have downloaded suspicious files, read the installer packages and make sure they are legit. If you cannot determine if the program you downloaded is infected, do a quick Internet search and see if any other users reported issues after installing a particular program.
3. Use an antivirus program like ClamXav. If you are in the habit of downloading a lot of media and other files, it may be well worth your while to run those files through this AV application.
4. Use Mac OS X's built-in Firewalls and other security features.
5. Peer-to-peer sharing applications and download torrents (such as the now defunct LimeWire) supplying pirated software, movies etc are hotbeds of potential software issues waiting to happen to your Mac. Everything from changing permissions to downloading trojans and other malicious software can be acquired from using these applications. Similar risks apply to using Facebook, Twitter, MySpace, YouTube and similar sites which are prone to malicious hacking: http://news.bbc.co.uk/1/hi/technology/8420233.stm
6. Resist the temptation to download pirated software. They can contain Botnet Trojans. SecureMac offer a simple and free tool for the removal of the iBotNet Trojan available here:
http://macscan.securemac.com/files/iServicesTrojanRemovalTool.dmg
YOUR PRIVACY ON THE INTERNET and the latest risks to look out for:
There is the potential for having your entire email contact list stolen for use for spamming:
http://www.nytimes.com/2009/06/20/technology/internet/20shortcuts.html?_r=1
And if you are using iPhone Apps you are also at risk of losing all privacy:
http://www.engadget.com/2010/10/03/hacker-claims-third-party-iphone-apps-can-tra nsmit-udid-pose-se/
The advent of HTML5 may also be a future threat to internet privacy:
http://www.nytimes.com/2010/10/11/business/media/11privacy.html?_r=1&hp
Security of OS X generally:
http://www.apple.com/macosx/what-is/security.html
http://www.nsa.gov/ia/_files/os/applemac/I731-007R-2007.pdf
Security Configuration for Version 10.5 Leopard:
http://manuals.info.apple.com/en_US/Leopard_Security_Config_2nd_Ed.pdf
NOTE: Apple's Snow Leopard and Lion operating systems silently update the malware protection built into Mac OS X to protect against a backdoor Trojan horse that can allow hackers to gain remote control over your treasured iMac or MacBook: Macs running Snow Leopard or Lion now check for new malware definitions daily, allowing Apple to quickly deploy protection from threats before they have a chance to spread.
Few malicious titles actually exist for Mac OS X, and those that do rely almost entirely upon duping users to install software that pretends to be legitimate.
http://www.sophos.com/blogs/gc/g/2010/06/18/apple-secretly-updates
However, if you are running Lion Server:
Apple's new server operating system -- OS X Lion -- is so inherently insecure that Stamos recommends keeping it off the network altogether and using Macs only as standalone machines connected to IP or Windows networks, not those designed for Macs.
The Mac Server's networking protocols -- especially DHX User Authentication -- are designed for ease of use, not security. It is trivial, Stamos said, for hackers to set up a Mac user to download a file that will overflow the buffer protecting the heap segment of the server's memory, allowing the file's malicious payload to run uncontrolled in the server's memory and give itself whatever access rights it wants.
http://www.macworld.co.uk/mac/news/index.cfm?newsid=3301796&olo=email

Recommended Anti Virus for iMac 10.9.5?

I have recently been blocked by an anti spam software Spamhaus. It just happened overnight, and with a large company I have done business with for years.
The only thing I can find from the spamhaus website says I may have a virus. That may be true because I've had a few font issues lately. Are there any suggestions? I hate to spend a yearly fee, but I don't trust the free online offers. Thanks.

Well, This does not mean anything to me, but I don't see anything in red telling me it's bad.
EtreCheck version: 2.1.8 (121)
Report generated March 11, 2015 at 1:28:04 PM CDT
Download EtreCheck from http://etresoft.com/etrecheck
Click the [Click for support] links for help with non-Apple products.
Click the [Click for details] links for more information about that line.
Hardware Information: ℹ️
    iMac (27-inch, Late 2013) (Technical Specifications)
    iMac - model: iMac14,2
    1 3.5 GHz Intel Core i7 CPU: 4-core
    16 GB RAM Upgradeable
        BANK 0/DIMM0
            8 GB DDR3 1600 MHz ok
        BANK 1/DIMM0
            8 GB DDR3 1600 MHz ok
        BANK 0/DIMM1
            Empty
        BANK 1/DIMM1
            Empty
    Bluetooth: Good - Handoff/Airdrop2 supported
    Wireless: en1: 802.11 a/b/g/n/ac
Video Information: ℹ️
    NVIDIA GeForce GTX 780M - VRAM: 4096 MB
        iMac 2048 x 1152
System Software: ℹ️
    OS X 10.9.5 (13F1066) - Time since boot: 23:36:54
Disk Information: ℹ️
    APPLE SSD SD0128F disk0 : (121.33 GB)
        EFI (disk0s1) <not mounted> : 210 MB
        Boot OS X (disk0s3) <not mounted> : 134 MB
        Hard Drive (disk2) / : 3.11 TB (2.89 TB free)
            Core Storage: disk0s2 120.99 GB Online
            Core Storage: disk1s2 3.00 TB Online
    APPLE HDD ST3000DM001 disk1 : (3 TB)
        EFI (disk1s1) <not mounted> : 210 MB
        Recovery HD (disk1s3) <not mounted> [Recovery]: 650 MB
        Hard Drive (disk2) / : 3.11 TB (2.89 TB free)
            Core Storage: disk0s2 120.99 GB Online
            Core Storage: disk1s2 3.00 TB Online
USB Information: ℹ️
    Western Digital My Passport 0748 2 TB
        disk4s1 (disk4s1) <not mounted> : 32 KB
        Backup (disk4s3) /Volumes/Backup : 2.00 TB (1.45 TB free)
    Apple Inc. BRCM20702 Hub
        Apple Inc. Bluetooth USB Host Controller
    Apple Inc. FaceTime HD Camera (Built-in)
    Canon Pro9000II series
    Apple Inc. MacBook Air SuperDrive
    SanDisk Corporation Cruzer Mini 262.1 MB
        NO NAME (disk3s1) /Volumes/NO NAME : 262 MB (125 MB free)
Thunderbolt Information: ℹ️
    Apple Inc. thunderbolt_bus
Gatekeeper: ℹ️
    Mac App Store and identified developers
Kernel Extensions: ℹ️
        /System/Library/Extensions
    [not loaded]    com.leapfrog.codeless.kext (2) [Click for support]
    [not loaded]    com.leapfrog.driver.LfConnectDriver (1.9.8 - SDK 10.8) [Click for support]
Launch Agents: ℹ️
    [not loaded]    com.adobe.AAM.Updater-1.0.plist [Click for support]
    [running]    com.adobe.AdobeCreativeCloud.plist [Click for support]
    [running]    com.extensis.FMCore.plist [Click for support]
Launch Daemons: ℹ️
    [loaded]    com.adobe.fpsaud.plist [Click for support]
    [loaded]    com.adobe.SwitchBoard.plist [Click for support]
    [loaded]    com.leapfrog.connect.authdaemon.plist [Click for support]
    [loaded]    com.microsoft.office.licensing.helper.plist [Click for support]
User Launch Agents: ℹ️
    [loaded]    com.adobe.AAM.Updater-1.0.plist [Click for support]
    [loaded]    com.adobe.ARM.[...].plist [Click for support]
    [loaded]    com.adobe.ARM.[...].plist [Click for support]
    [loaded]    com.citrixonline.GoToMeeting.G2MUpdate.plist [Click for support]
    [running]    com.leapfrog.connect.monitor.plist [Click for support]
User Login Items: ℹ️
    iTunesHelper    Application (/Applications/iTunes.app/Contents/MacOS/iTunesHelper.app)
    Dropbox    Application (/Applications/Dropbox.app)
    XtraFinder    Application (/Applications/XtraFinder.app)
Internet Plug-ins: ℹ️
    Unity Web Player: Version: UnityPlayer version 4.5.4f1 - SDK 10.6 [Click for support]
    Default Browser: Version: 537 - SDK 10.9
    AdobeExManDetect: Version: AdobeExManDetect 1.1.0.0 - SDK 10.7 [Click for support]
    AdobeAAMDetect: Version: AdobeAAMDetect 2.0.0.0 - SDK 10.7 [Click for support]
    FlashPlayer-10.6: Version: 16.0.0.305 - SDK 10.6 [Click for support]
    AdobePDFViewerNPAPI: Version: 11.0.10 - SDK 10.6 [Click for support]
    Silverlight: Version: 5.1.30514.0 - SDK 10.6 [Click for support]
    Flash Player: Version: 16.0.0.305 - SDK 10.6 [Click for support]
    QuickTime Plugin: Version: 7.7.3
    SharePointBrowserPlugin: Version: 14.4.8 - SDK 10.6 [Click for support]
    AdobePDFViewer: Version: 11.0.10 - SDK 10.6 [Click for support]
    JavaAppletPlugin: Version: 14.9.0 - SDK 10.7 Check version
User internet Plug-ins: ℹ️
    CitrixOnlineWebDeploymentPlugin: Version: 1.0.105 [Click for support]
    WebEx64: Version: 1.0 - SDK 10.6 [Click for support]
3rd Party Preference Panes: ℹ️
    None
Time Machine: ℹ️
    Skip System Files: NO
    Auto backup: YES
    Volumes being backed up:
        Hard Drive: Disk size: 3.11 TB Disk used: 223.52 GB
    Destinations:
        Backup [Local]
        Total size: 2.00 TB
        Total number of backups: 67
        Oldest backup: 2014-07-11 00:56:22 +0000
        Last backup: 2015-03-11 18:16:11 +0000
        Size of backup disk: Adequate
            Backup size 2.00 TB > (Disk used 223.52 GB X 3)
Top Processes by CPU: ℹ️
         4%    WindowServer
         1%    Microsoft Word
         1%    Creative Cloud
         0%    fontd
         0%    AppleSpell
Top Processes by Memory: ℹ️
    378 MB    mds_stores
    344 MB    Finder
    241 MB    WindowServer
    206 MB    com.apple.WebKit.WebContent
    172 MB    softwareupdated
Virtual Memory Information: ℹ️
    10.36 GB    Free RAM
    3.82 GB    Active RAM
    1.54 GB    Inactive RAM
    1.44 GB    Wired RAM
    1.64 GB    Page-ins
    0 B    Page-outs
Diagnostics Information: ℹ️
    Mar 10, 2015, 01:50:48 PM    Self test - passed
    Mar 10, 2015, 01:48:22 PM    /Library/Logs/DiagnosticReports/AdobeCrashDaemon_2015-03-10-134822_[redacted].c rash
    Mar 10, 2015, 11:34:33 AM    /Users/[redacted]/Library/Logs/DiagnosticReports/Adobe InDesign CC 2014_2015-03-10-113433_[redacted].crash
    Mar 10, 2015, 08:50:06 AM    /Users/[redacted]/Library/Logs/DiagnosticReports/com.apple.WebKit.Plugin.64_201 5-03-10-085006_[redacted].crash
    Mar 9, 2015, 11:41:03 AM    /Library/Logs/DiagnosticReports/Finder_2015-03-09-114103_[redacted].hang
    Mar 9, 2015, 11:40:58 AM    /Library/Logs/DiagnosticReports/Finder_2015-03-09-114058_[redacted].hang
    Mar 9, 2015, 11:08:39 AM    /Library/Logs/DiagnosticReports/Microsoft Excel_2015-03-09-110839_[redacted].hang

Anti-virus for imac

Hi,
I have a new iMac. does it have its own anti virus pre-installed..since i have installed hotspot shield for mac, i have been downloading movies from the web. does that make any harm or bring any virus to the mac from the web. if yes, whats the solution..
Thank you,

1. This is a comment on what you should and should not do to protect yourself from malicious software ("malware") that circulates on the Internet. It does not apply to software, such as keystroke loggers, that may be installed deliberately by an intruder who has hands-on access to your computer, or who has been able to log in to it remotely. That threat is in a different category, and there's no easy way to defend against it. If you have reason to suspect that you're the target of such an attack, you need expert help.
If you find this comment too long or too technical, read only sections 5, 6, and 10.
OS X now implements three layers of built-in protection specifically against malware, not counting runtime protections such as execute disable, sandboxing, system library randomization, and address space layout randomization that may also guard against other kinds of exploits.
2. All versions of OS X since 10.6.7 have been able to detect known Mac malware in downloaded files, and to block insecure web plugins. This feature is transparent to the user. Internally Apple calls it "XProtect."
The malware recognition database used by XProtect is automatically updated; however, you shouldn't rely on it, because the attackers are always at least a day ahead of the defenders.
The following caveats apply to XProtect:
It can be bypassed by some third-party networking software, such as BitTorrent clients and Java applets.
It only applies to software downloaded from the network. Software installed from a CD or other media is not checked.
As new versions of OS X are released, it's not clear whether Apple will indefinitely continue to maintain the XProtect database of older versions such as 10.6. The security of obsolete system versions may eventually be degraded. Security updates to the code of obsolete systems will stop being released at some point, and that may leave them open to other kinds of attack besides malware.
3. Starting with OS X 10.7.5, there has been a second layer of built-in malware protection, designated "Gatekeeper" by Apple. By default, applications and Installer packages downloaded from the network will only run if they're digitally signed by a developer with a certificate issued by Apple. Software certified in this way hasn't necessarily been tested by Apple, but you can be reasonably sure that it hasn't been modified by anyone other than the developer. His identity is known to Apple, so he could be held legally responsible if he distributed malware. That may not mean much if the developer lives in a country with a weak legal system (see below.)
Gatekeeper doesn't depend on a database of known malware. It has, however, the same limitations as XProtect, and in addition the following:
It can easily be disabled or overridden by the user.
A malware attacker could get control of a code-signing certificate under false pretenses, or could simply ignore the consequences of distributing codesigned malware.
An App Store developer could find a way to bypass Apple's oversight, or the oversight could fail due to human error.
For the reasons given above, App Store products, and other applications recognized by Gatekeeper as signed, are safer than others, but they can't be considered absolutely safe. "Sandboxed" applications may prompt for access to private data, such as your contacts, or for access to the network. Think before granting that access. Sandboxing security is based on user input. Never click through any request for authorization without thinking.
4. Starting with OS X 10.8.3, a third layer of protection has been added: a "Malware Removal Tool" (MRT). MRT runs automatically in the background when you update the OS. It checks for, and removes, malware that may have evaded the other protections via a Java exploit (see below.) MRT also runs when you install or update the Apple-supplied Java runtime (but not the Oracle runtime.) Like XProtect, MRT is effective against known threats, but not against unknown ones. It notifies you if it finds malware, but otherwise there's no user interface to MRT.
5. The built-in security features of OS X reduce the risk of malware attack, but they're not absolute protection. The first and best line of defense is always going to be your own intelligence. With the possible exception of Java exploits, all known malware circulating on the Internet that affects a fully-updated installation of OS X 10.6 or later takes the form of so-called "Trojan horses," which can only have an effect if the victim is duped into running them. The threat therefore amounts to a battle of wits between you and Internet criminals. If you're smarter than they think you are, you'll win. That means, in practice, that you always stay within a safe harbor of computing practices. How do you know when you're leaving the safe harbor? Below are some red flags that indicate danger.
Software from an untrustworthy source
Software of any kind is distributed via BitTorrent or Usenet.
Software with a corporate brand, such as Adobe Flash Player, doesn't come directly from the developer’s website.
Rogue websites such as Softonic and CNET Download distribute free applications that have been packaged in a superfluous "installer."
The software is advertised by means of spam or intrusive web popups.
Software that is plainly illegal or does something illegal
Software that you would otherwise have to pay for is "cracked" or "free."
An application helps you to infringe copyright, for instance by circumventing the copy protection on commercial software, or saving streamed media for reuse without permission.
Conditional or unsolicited offers from strangers
A telephone caller or a web page tells you that you have a “virus” and offers to help you remove it. (Some reputable websites did legitimately warn visitors who were infected with the "DNSChanger" malware. That exception to this rule no longer applies.)
A web site offers free content such as video or music, but to use it you must install a “codec,” “plug-in,” "player," "downloader," "extractor," or “certificate” that comes from that same site, or an unknown one.
You win a prize in a contest you never entered.
Someone on a message board such as this one is eager to help you, but only if you download an application of his choosing.
A "FREE WI-FI !!!" network advertises itself in a public place such as an airport, but is not provided by the management.
Unexpected events
You open what looks like a document and get an alert that it's "an application downloaded from the Internet." Click Cancel and delete the file or message.
An application does something you don't expect, such as asking for permission to access your contacts, your location, or the Internet for no obvious reason.
Software is attached to email that you didn't request, even if it comes (or seems to come) from someone you trust.
I don't say that leaving the safe harbor just once will necessarily result in disaster, but making a habit of it will weaken your defenses against malware attack. Any of the above scenarios should, at the very least, make you uncomfortable.
6. Java on the Web (not to be confused with JavaScript, to which it's not related, despite the similarity of the names) is a weak point in the security of any system. Java is, among other things, a platform for running complex applications in a web page, on the client. That was always a bad idea, and Java's developers have proven themselves incapable of implementing it without also creating a portal for malware to enter. Past Java exploits are the closest thing there has ever been to a Windows-style virus affecting OS X. Merely loading a page with malicious Java content could be harmful.
Fortunately, client-side Java on the Web is obsolete and mostly extinct. Only a few outmoded sites still use it. Try to hasten the process of extinction by avoiding those sites, if you have a choice. Forget about playing games or other non-essential uses of Java.
Java is not included in OS X 10.7 and later. Discrete Java installers are distributed by Apple and by Oracle (the developer of Java.) Don't use either one unless you need it. Most people don't. If Java is installed, disable it — not JavaScript — in your browsers.
Regardless of version, experience has shown that Java on the Web can't be trusted. If you must use a Java applet for a task on a specific site, enable Java only for that site in Safari. Never enable Java for a public website that carries third-party advertising. Use it only on well-known, login-protected, secure websites without ads. In Safari 6 or later, you'll see a lock icon in the address bar with the abbreviation "https" when visiting a secure site.
Stay within the safe harbor, and you’ll be as safe from malware as you can practically be. The rest of this comment concerns what you should not do to protect yourself.
7. Never install any commercial "anti-virus" or "Internet security" products for the Mac, as they all do more harm than good, if they do any good at all. If you need to be able to detect Windows malware in your files, use one of the free security apps in the Mac App Store — nothing else.
Why shouldn't you use commercial "anti-virus" products?
To recognize malware, the software depends on a database of known threats, which is always at least a day out of date. New threats are emerging on a daily basis. Research has shown that most successful attacks are "zero-day" — that is, previously unknown. Recognition-based malware scanners do not defend against such attacks.
Their design is predicated on the nonexistent threat that malware may be injected at any time, anywhere in the file system. Malware is downloaded from the network; it doesn't materialize from nowhere.
In order to meet that nonexistent threat, the software modifies or duplicates low-level functions of the operating system, which is a waste of resources and a common cause of instability, bugs, and poor performance.
By modifying the operating system, the software itself may create weaknesses that could be exploited by malware attackers.
8. An anti-malware product from the App Store, such as "ClamXav," has the same drawback as the commercial suites of being always out of date, but it does not inject code into the operating system. That doesn't mean it's entirely harmless. It may report email messages that have "phishing" links in the body, or Windows malware in attachments, as infected files, and offer to delete or move them. Doing so will corrupt the Mail database. The messages should be deleted from within the Mail application.
An anti-virus app is not needed, and should not be relied upon, for protection against OS X malware. It's useful only for detecting Windows malware, and even for that use it's not completely effective. Windows malware can't harm you directly (unless, of course, you use Windows.) Just don't pass it on to anyone else.
A Windows malware attachment in email is usually easy to recognize. The file name will often be targeted at people who aren't very bright; for example:
♥♥♥♥♥♥♥♥♥♥♥♥♥♥!!!!!!!H0TBABEZ4U!!!!!!!.AVI♥♥♥♥♥♥♥♥♥♥♥♥♥♥.exe
Anti-virus software may be able to tell you which particular trojan it is, but do you really care? In practice, there's seldom a reason to use the software unless an institutional policy requires it. Windows malware is so widespread that you should assume it's in every unknown email attachment until proven otherwise.
The ClamXav developer won't try to "upsell" you to a paid version of the product. Other developers may do that. Don't be upsold. For one thing, you should not pay to protect Windows users from the consequences of their choice of computing platform. For another, a paid upgrade from a free app will probably have all the disadvantages mentioned in section 7.
9. It seems to be a common belief that the built-in Application Firewall acts as a barrier to infection, or prevents malware from functioning. It does neither. It blocks inbound connections to certain network services you're running, such as file sharing. It's disabled by default and you should leave it that way if you're behind a router on a private home or office network. Activate it only when you're on an untrusted network, for instance a public Wi-Fi hotspot, where you don't want to provide services. Disable any services you don't use in the Sharing preference pane. All are disabled by default.
10. As a Mac user you don't have to live in fear that your computer may be infected every time you install software, read email, or visit a web page. But neither should you assume that you will always be safe from exploitation, no matter what you do. The greatest harm done by security software is precisely its selling point: it makes people feel safe. They may then feel safe enough to take risks from which the software doesn't protect them. "Hmmmm, this torrent is a crack of that new game I want. I think I'll download it. It could be a trojan, but the antivirus will warn me if it is." Then they wonder why their Mac is so slow all of a sudden. It's slow because it's running flat out mining bitcoins for a hacker who has already sold their credit card number and banking passwords to a criminal gang. Maybe a week later the antivirus does warn them, but what good does that do?
Nothing can lessen the need for safe computing practices.

Anti-Virus For iMac 05 Recommendations?

Current iMac 05 Users
Have you found you need an anti-virus and if so what program are you using?
Thanks in advance for your input.
iMac 5 Mac OS X (10.4)

Intego Virus Barrier is an excellent program.
Whichever program you go with, just make certain that it is NOT Norton. Their software damages your computer. Maybe that would be a good trade if there were viruses for it to fight, but in the absence of viruses that can infect OS X it is unacceptable.
Norton does do a good job of telling you that it has quaranteened loads of viruses, but since they are windows viruses that can't harm you anyway, that is unnecessary scaremongering to make you feel the need for them.
While there are currently no viruses, a large number of unprotected Macs may well mean the rapid and devastating spread of one when someone does succeed. Which is likely to happen, if ever, some time after the introduction of Windows Vista. Currently the ease of attacking Windows plus the sheer number of users keeps us safe, but Vista may well be as security protected as OS X and also Mac numbers are growing. Sooner or later attacking OS X will become more likely than previous years. Hopefully I will benefit at that time from a rapid update from Intego.
Okay, so it may be wonky reasoning, but it helps me sleep better at night.

One half-3666 virus on iMac

I have an iMac that runs OS X Mavericks. My antivirus software just detected the one half-3666 virus. Now my desktop icons are gone and Finder will not open. How can I get rid of the virus?

As a brody has pointed out, this is Windows malware, and as such it cannot affect your Mac OS X system in any way. It ought to be removed, but removing it needs to be done with care, as improperly deleting it could cause other problems. See How to remove infected files. Also, what anti-virus software are you using?
As for the issue with the Finder not opening (which is also why your desktop icons are gone - the Finder is in charge of drawing the desktop), that's unrelated. Are you able to get the machine working properly when you start up in safe mode? If so, and if the problem returns when you restart normally, some third-party software you have is causing the problem.

Are there any viruses for iMac late 2013?

I bought an iMac 27 late 2013. My first apple anything. I was told by the B/B sales person that I needed webroot for anti-virus protection. I got it and now I am not sure if I need it. I have read a few articles and watched some you tube vids from 2010. What they all claim is there were no viruses at that time and that buying a program to prevent a virus was a waste of money since there was nothing at that point. I can't find any thing on a virus for the iMac 27. Any one heard different ?

Mac users often ask whether they should install "anti-virus" software. The answer usually given on ASC is "no." The answer is right, but it may give the wrong impression that there is no threat from what are loosely called "viruses." There is a threat, and you need to educate yourself about it.
1. This is a comment on what you should—and should not—do to protect yourself from malicious software ("malware") that circulates on the Internet and gets onto a computer as an unintended consequence of the user's actions. It does not apply to software, such as keystroke loggers, that may be installed deliberately by an intruder who has hands-on access to the computer, or who has been able to log in to it remotely. That threat is in a different category, and there's no easy way to defend against it.
The comment is long because the issue is complex. The key points are in sections 5, 6, and 10.
OS X now implements three layers of built-in protection specifically against malware, not counting runtime protections such as execute disable, sandboxing, system library randomization, and address space layout randomization that may also guard against other kinds of exploits.
2. All versions of OS X since 10.6.7 have been able to detect known Mac malware in downloaded files, and to block insecure web plugins. This feature is transparent to the user. Internally Apple calls it "XProtect."
The malware recognition database used by XProtect is automatically updated; however, you shouldn't rely on it, because the attackers are always at least a day ahead of the defenders.
The following caveats apply to XProtect:
☞ It can be bypassed by some third-party networking software, such as BitTorrent clients and Java applets.
☞ It only applies to software downloaded from the network. Software installed from a CD or other media is not checked.
As new versions of OS X are released, it's not clear whether Apple will indefinitely continue to maintain the XProtect database of older versions such as 10.6. The security of obsolete system versions may eventually be degraded. Security updates to the code of obsolete systems will stop being released at some point, and that may leave them open to other kinds of attack besides malware.
3. Starting with OS X 10.7.5, there has been a second layer of built-in malware protection, designated "Gatekeeper" by Apple. By default, applications and Installer packages downloaded from the network will only run if they're digitally signed by a developer with a certificate issued by Apple. Software certified in this way hasn't necessarily been tested by Apple, but you can be reasonably sure that it hasn't been modified by anyone other than the developer. His identity is known to Apple, so he could be held legally responsible if he distributed malware. That may not mean much if the developer lives in a country with a weak legal system (see below.)
Gatekeeper doesn't depend on a database of known malware. It has, however, the same limitations as XProtect, and in addition the following:
☞ It can easily be disabled or overridden by the user.
☞ A malware attacker could get control of a code-signing certificate under false pretenses, or could simply ignore the consequences of distributing codesigned malware.
☞ An App Store developer could find a way to bypass Apple's oversight, or the oversight could fail due to human error.
Apple has so far failed to revoke the codesigning certificates of some known abusers, thereby diluting the value of Gatekeeper and the Developer ID program. These failures don't involve App Store products, however.
For the reasons given, App Store products, and—to a lesser extent—other applications recognized by Gatekeeper as signed, are safer than others, but they can't be considered absolutely safe. "Sandboxed" applications may prompt for access to private data, such as your contacts, or for access to the network. Think before granting that access. Sandbox security is based on user input. Never click through any request for authorization without thinking.
4. Starting with OS X 10.8.3, a third layer of protection has been added: a "Malware Removal Tool" (MRT). MRT runs automatically in the background when you update the OS. It checks for, and removes, malware that may have evaded the other protections via a Java exploit (see below.) MRT also runs when you install or update the Apple-supplied Java runtime (but not the Oracle runtime.) Like XProtect, MRT is effective against known threats, but not against unknown ones. It notifies you if it finds malware, but otherwise there's no user interface to MRT.
5. The built-in security features of OS X reduce the risk of malware attack, but they are not, and never will be, complete protection. Malware is a problem of human behavior, and a technological fix is not going to solve it. Trusting software to protect you will only make you more vulnerable.
The best defense is always going to be your own intelligence. With the possible exception of Java exploits, all known malware circulating on the Internet that affects a fully-updated installation of OS X 10.6 or later takes the form of so-called "Trojan horses," which can only have an effect if the victim is duped into running them. The threat therefore amounts to a battle of wits between you and the scam artists. If you're smarter than they think you are, you'll win. That means, in practice, that you always stay within a safe harbor of computing practices. How do you know when you're leaving the safe harbor? Below are some warning signs of danger.
Software from an untrustworthy source
☞ Software of any kind is distributed via BitTorrent, or Usenet, or on a website that also distributes pirated music or movies.
☞ Software with a corporate brand, such as Adobe Flash Player, doesn't come directly from the developer’s website. Do not trust an alert from any website to update Flash, or your browser, or any other software.
☞ Rogue websites such as Softonic and CNET Download distribute free applications that have been packaged in a superfluous "installer."
☞ The software is advertised by means of spam or intrusive web ads. Any ad, on any site, that includes a direct link to a download should be ignored.
Software that is plainly illegal or does something illegal
☞ High-priced commercial software such as Photoshop is "cracked" or "free."
☞ An application helps you to infringe copyright, for instance by circumventing the copy protection on commercial software, or saving streamed media for reuse without permission.
Conditional or unsolicited offers from strangers
☞ A telephone caller or a web page tells you that you have a “virus” and offers to help you remove it. (Some reputable websites did legitimately warn visitors who were infected with the "DNSChanger" malware. That exception to this rule no longer applies.)
☞ A web site offers free content such as video or music, but to use it you must install a “codec,” “plug-in,” "player," "downloader," "extractor," or “certificate” that comes from that same site, or an unknown one.
☞ You win a prize in a contest you never entered.
☞ Someone on a message board such as this one is eager to help you, but only if you download an application of his choosing.
☞ A "FREE WI-FI !!!" network advertises itself in a public place such as an airport, but is not provided by the management.
☞ Anything online that you would expect to pay for is "free."
Unexpected events
☞ A file is downloaded automatically when you visit a web page, with no other action on your part. Delete any such file without opening it.
☞ You open what you think is a document and get an alert that it's "an application downloaded from the Internet." Click Cancel and delete the file. Even if you don't get the alert, you should still delete any file that isn't what you expected it to be.
☞ An application does something you don't expect, such as asking for permission to access your contacts, your location, or the Internet for no obvious reason.
☞ Software is attached to email that you didn't request, even if it comes (or seems to come) from someone you trust.
I don't say that leaving the safe harbor just once will necessarily result in disaster, but making a habit of it will weaken your defenses against malware attack. Any of the above scenarios should, at the very least, make you uncomfortable.
6. Java on the Web (not to be confused with JavaScript, to which it's not related, despite the similarity of the names) is a weak point in the security of any system. Java is, among other things, a platform for running complex applications in a web page, on the client. That was always a bad idea, and Java's developers have proven themselves incapable of implementing it without also creating a portal for malware to enter. Past Java exploits are the closest thing there has ever been to a Windows-style virus affecting OS X. Merely loading a page with malicious Java content could be harmful.
Fortunately, client-side Java on the Web is obsolete and mostly extinct. Only a few outmoded sites still use it. Try to hasten the process of extinction by avoiding those sites, if you have a choice. Forget about playing games or other non-essential uses of Java.
Java is not included in OS X 10.7 and later. Discrete Java installers are distributed by Apple and by Oracle (the developer of Java.) Don't use either one unless you need it. Most people don't. If Java is installed, disable it—not JavaScript—in your browsers.
Regardless of version, experience has shown that Java on the Web can't be trusted. If you must use a Java applet for a task on a specific site, enable Java only for that site in Safari. Never enable Java for a public website that carries third-party advertising. Use it only on well-known, login-protected, secure websites without ads. In Safari 6 or later, you'll see a lock icon in the address bar with the abbreviation "https" when visiting a secure site.
Stay within the safe harbor, and you’ll be as safe from malware as you can practically be. The rest of this comment concerns what you should not do to protect yourself.
7. Never install any commercial "anti-virus" (AV) or "Internet security" products for the Mac, as they are all worse than useless. If you need to be able to detect Windows malware in your files, use one of the free security apps in the Mac App Store—nothing else.
Why shouldn't you use commercial AV products?
☞ To recognize malware, the software depends on a database of known threats, which is always at least a day out of date. This technique is a proven failure, as a major AV software vendor has admitted. Most attacks are "zero-day"—that is, previously unknown. Recognition-based AV does not defend against such attacks, and the enterprise IT industry is coming to the realization that traditional AV software is worthless.
☞ Its design is predicated on the nonexistent threat that malware may be injected at any time, anywhere in the file system. Malware is downloaded from the network; it doesn't materialize from nowhere. In order to meet that nonexistent threat, commercial AV software modifies or duplicates low-level functions of the operating system, which is a waste of resources and a common cause of instability, bugs, and poor performance.
☞ By modifying the operating system, the software may also create weaknesses that could be exploited by malware attackers.
☞ Most importantly, a false sense of security is dangerous.
8. An AV product from the App Store, such as "ClamXav," has the same drawback as the commercial suites of being always out of date, but it does not inject low-level code into the operating system. That doesn't mean it's entirely harmless. It may report email messages that have "phishing" links in the body, or Windows malware in attachments, as infected files, and offer to delete or move them. Doing so will corrupt the Mail database. The messages should be deleted from within the Mail application.
An AV app is not needed, and cannot be relied upon, for protection against OS X malware. It's useful, if at all, only for detecting Windows malware, and even for that use it's not really effective, because new Windows malware is emerging much faster than OS X malware.
Windows malware can't harm you directly (unless, of course, you use Windows.) Just don't pass it on to anyone else. A malicious attachment in email is usually easy to recognize by the name alone. An actual example:
London Terror Moovie.avi [124 spaces] Checked By Norton Antivirus.exe
You don't need software to tell you that's a Windows trojan. Software may be able to tell you which trojan it is, but who cares? In practice, there's no reason to use recognition software unless an organizational policy requires it. Windows malware is so widespread that you should assume it's in everyemail attachment until proven otherwise. Nevertheless, ClamXav or a similar product from the App Store may serve a purpose if it satisfies an ill-informed network administrator who says you must run some kind of AV application. It's free and it won't handicap the system.
The ClamXav developer won't try to "upsell" you to a paid version of the product. Other developers may do that. Don't be upsold. For one thing, you should not pay to protect Windows users from the consequences of their choice of computing platform. For another, a paid upgrade from a free app will probably have all the disadvantages mentioned in section 7.
9. It seems to be a common belief that the built-in Application Firewall acts as a barrier to infection, or prevents malware from functioning. It does neither. It blocks inbound connections to certain network services you're running, such as file sharing. It's disabled by default and you should leave it that way if you're behind a router on a private home or office network. Activate it only when you're on an untrusted network, for instance a public Wi-Fi hotspot, where you don't want to provide services. Disable any services you don't use in the Sharing preference pane. All are disabled by default.
10. As a Mac user, you don't have to live in fear that your computer may be infected every time you install software, read email, or visit a web page. But neither can you assume that you will always be safe from exploitation, no matter what you do. Navigating the Internet is like walking the streets of a big city. It's as safe or as dangerous as you choose to make it. The greatest harm done by security software is precisely its selling point: it makes people feel safe. They may then feel safe enough to take risks from which the software doesn't protect them. Nothing can lessen the need for safe computing practices.

Virus on imac? **** attached to email to my client.

Please help. I thought imacs could not get any virus. BUT, I sent an email to a client via yahoo and the attachment I sent came over as ****, and not the project I sent. I don't have **** on my computer, so I assume this is a virus? PLEASE advise!

I thought imacs could not get any virus.
Correct
I assume this is a virus?
Nope. Why would you assume that?
I sent an email to a client via yahoo and the attachment I sent came over as **, and not the project I sent.
By no means does that indicate a virus.
Without more details nobody here can say what might have happened.

Mac Virus on iMac?

Ok. I just got a 24" iMac. I know that the best way to get help is to be honest, so don't laugh at me. Essentially, I irritated this computer geek because I wouldn't ahem with him. He's since then cracked my Facebook password, myspace, deviant art account, and email account(s). I now fear for my brand new iMac.
Just now, the screen started flashing black. The little... icon thing that shows that something is loading (it wasn't the beach ball, but the other one that spins around like on the iPod Touches). I manually shut the iMac off (push and hold power button). I turned it back on and it SEEMS to be fine.
My question is this. I originally got a Mac computer because they're immune to viruses. Is this true or not? And what am I supposed to DO?

I've been using Mac's for 25 years. I had a Mac server online with strangers from all over the world uploading anything they wanted to it. It was online and NEVER even turned off for 3 straight years (until I moved). You know what I've NEVER had on any Macintosh I've ever owned. 1. A Virus or 2. Anti-Virus
If you're really worried listen to the very good advice you received from a fellow Mac user, not an advertising supported magazine.
Get ClamXav. It works, it's good, it's FREE.
There are NO KNOW VIRUSES (at least in the wild) on Mac OS X. Virus- Meaning they dig in and do damage to your system and then replicate to other peoples computers, you know, spread like a virus. Maybe there are some nefarious apps out there that could possibly effect the Mac but the Mac is built on a UNIX foundation. UNIX has been under development (and is still being developed) for 40 years! They have managed to make it pretty secure in that length of time. It's not inpenetrable, but it's very safe. If anyone is going to cause grave harm to your computer it's going to be you, by giving permission to some application that you don't know what it does.
Don't worry to much. Make and keep backups, keep software updated, call the cops on your psycho nerd stalker and change your passwords to something less obvious.
enjoy your new iMac!

Possible Malware or Virus on IMac?

Today one of my family members visited the site Neopets, as she does almost everyday. What is strange is that every link she clicks on the site, be it for playing a game, checking contact information at the bottom of the site, starting a game etc,would cause a pop up to appear saying that we do not have the updated player. By pressing ok, it redirects us to a site called updateplayer.us. It is almost identical to the adobe/flash site which makes me believe that its some type of phishing scam. Furthermore, it will again redirect us to other sites, all similar but with different names (i.e. bamplay.net, and fatplay.net). These sites were identical to one another (bamplay and fatplay). So my question is, do we have a virus or malware on or mac? We have the lion OS. Everything is up to date, (flash player is 13.0.0.214) and our system updates are all up to date. We only download updates through system preferences/ software update. Other than pictures that we have recieved from friends and family, and the occasional pdf we download for school/taxes, the only downloading/installing we have done is from the system/flash updates. We don't visit any malicious websites and are fairly cautious internet users. This just started happening today for the first time ever, and it only appears to be happening on Neopets. Do we have a virus or malicious software installed? Everything else seems to be running fine. Safari still seems to be fast. Or is this something on Neopets end? I'm not very skilled with computers so any help would be appreciated!
Thanks!
P.S.
Has anyone else who visits the site been experiencing this?

If Neopets requires Adobe Flash Player, always navigate on your own to Adobe's website and download the installer from them, and never from within someone else's website including this one. Fortunately, thousands of Apple Support Communities participants are here to rapidly respond to anyone's malicious intent.
Adobe's website is as follows, which you will be able to see for yourself exactly as it appears, in your browser's URL field:
https://get.adobe.com/flashplayer/
Ignore unexpected popups or solicitations to update Flash Player; they can direct you to fraudulent sites that will attempt to convince you to install malicious software, or to reveal personal information such as your Apple ID credentials.
Or is this something on Neopets end?
That is another possibility, as are other potential causes, but the malicious router hacking I described is a serious concern and must be ruled out at your earliest opportunity.

Anti virus for imac mavericks any recommendations

Any recommendations for anti virus software for mavericks 10.9.3

Skipbowler wrote:
Any recommendations for anti virus software for mavericks 10.9.3
Use what you already bought and paid for. OS X already includes everything it needs to protect itself from viruses and malware. Keep it that way with software updates from Apple.
A much better question is "how should I protect my Mac":
Never install any product that claims to "speed up", "clean up", "optimize", or "accelerate" your Mac. Without exception, they will do the opposite.
Never install pirated or "cracked" software, software obtained from dubious websites, or other questionable sources. Illegally obtained software is almost certain to contain malware.
Don’t supply your password in response to a popup window requesting it, unless you know what it is and the reason your credentials are required.
Don’t open email attachments from email addresses that you do not recognize, or click links contained in an email:
Most of these are scams that direct you to fraudulent sites that attempt to convince you to disclose personal information.
Such "phishing" attempts are the 21st century equivalent of a social exploit that has existed since the dawn of civilization. Don’t fall for it.
Apple will never ask you to reveal personal information in an email. If you receive an unexpected email from Apple saying your account will be closed unless you take immediate action, just ignore it. If your iTunes or App Store account becomes disabled for valid reasons, you will know when you try to buy something or log in to this support site, and are unable to.
Don’t install browser extensions unless you understand their purpose. Go to the Safari menu > Preferences > Extensions. If you see any extensions that you do not recognize or understand, simply click the Uninstall button and they will be gone.
Don’t install Java unless you are certain that you need it:
Java, a non-Apple product, is a potential vector for malware. If you are required to use Java, be mindful of that possibility.
Java can be disabled in System Preferences.
Despite its name JavaScript is unrelated to Java. No malware can infect your Mac through JavaScript. It’s OK to leave it enabled.
Block browser popups: Safari menu > Preferences > Security > and check "Block popup windows":
Popup windows are useful and required for some websites, but popups have devolved to become a common means to deliver targeted advertising that you probably do not want.
Popups themselves cannot infect your Mac, but many contain resource-hungry code that will slow down Internet browsing.
If you ever see a popup indicating it detected registry errors, that your Mac is infected with some ick, or that you won some prize, it is 100% fraudulent. Ignore it.
Ignore hyperventilating popular media outlets that thrive by promoting fear and discord with entertainment products arrogantly presented as "news". Learn what real threats actually exist and how to arm yourself against them:
The most serious threat to your data security is phishing. To date, most of these attempts have been pathetic and are easily recognized, but that is likely to change in the future as criminals become more clever.
OS X viruses do not exist, but intentionally malicious or poorly written code, created by either nefarious or inept individuals, is nothing new.
Never install something without first knowing what it is, what it does, how it works, and how to get rid of it when you don’t want it any more.
If you elect to use "anti-virus" software, familiarize yourself with its limitations and potential to cause adverse effects, and apply the principle immediately preceding this one.
Most such utilities will only slow down and destabilize your Mac while they look for viruses that do not exist, conveying no benefit whatsoever - other than to make you "feel good" about security, when you should actually be exercising sound judgment, derived from accurate knowledge, based on verifiable facts.
Do install updates from Apple as they become available. No one knows more about Macs and how to protect them than the company that builds them.
Summary: Use common sense and caution when you use your Mac, just like you would in any social context. There is no product, utility, or magic talisman that can protect you from all the evils of mankind.

Como procurar virus no imac ?

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