Possible avast! anti-virus false positive on imac

greetings, installed the free avast! anti-virus software earlier today & ran a scan on my imac. results showed 2 infections of - Win32:Injector-AEO[Trj] . so i did a quick search & found that the win32 virus should have no effect on a mac. is that true? but that i could possible infect others pc's? also found that avast! is know for false positives, presumably so they can get you to upgrade to their expensive pay service. there seems to be no way to remove the infections with the free software avast! provided. i was advised to de-install the avast! software - which i did. so i was wondering what the best course of action is at this point? get norton or something & rescan, or what?

Windows malware does not affect OS X. It is true you can pass along the malware to another through email assuming the malware came to you in email and you forwarded the email to others.
In general you have no need for such protection in OS X at this time. You would be better off with no such software installed.
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.)

Similar Messages

How do I COMPLETELY uninstall Avast anti-virus (free edition) from my Mac?

How do we completely uninstall Avast anti-virus, latest edition from my Mac? This product has really messed up my Safari browser with all the extensions and
possible plug-ins!
Thank you for any advice!

If you don't have an uninstaller:
Uninstalling Software: The Basics
Most OS X applications are completely self-contained "packages" that can be uninstalled by simply dragging the application to the Trash. Applications may create preference files that are stored in the /Home/Library/Preferences/ folder. Although they do nothing once you delete the associated application, they do take up some disk space. If you want you can look for them in the above location and delete them, too.
Some applications may install an uninstaller program that can be used to remove the application. In some cases the uninstaller may be part of the application's installer, and is invoked by clicking on a Customize button that will appear during the install process.
Some applications may install components in the /Home/Library/Applications Support/ folder. You can also check there to see if the application has created a folder. You can also delete the folder that's in the Applications Support folder. Again, they don't do anything but take up disk space once the application is trashed.
Some applications may install a startupitem or a Log In item. Startupitems are usually installed in the /Library/StartupItems/ folder and less often in the /Home/Library/StartupItems/ folder. Log In Items are set in the Accounts preferences. Open System Preferences, click on the Accounts icon, then click on the LogIn Items tab. Locate the item in the list for the application you want to remove and click on the "-" button to delete it from the list.
Some software use startup daemons or agents that are a new feature of the OS. Look for them in /Library/LaunchAgents/ and /Library/LaunchDaemons/ or in /Home/Library/LaunchAgents/.
If an application installs any other files the best way to track them down is to do a Finder search using the application name or the developer name as the search term. Unfortunately Spotlight will not look in certain folders by default. You can modify Spotlight's behavior or use a third-party search utility, EasyFind, instead.
Some applications install a receipt in the /Library/Receipts/ folder. Usually with the same name as the program or the developer. The item generally has a ".pkg" extension. Be sure you also delete this item as some programs use it to determine if it's already installed.
There are many utilities that can uninstall applications. Here is a selection:
    1. AppZapper
    2. AppDelete
    3. Automaton
    4. Hazel
    5. AppCleaner
    6. CleanApp
    7. iTrash
    8. Amnesia
    9. Uninstaller
10. Spring Cleaning
For more information visit The XLab FAQs and read the FAQ on removing software.

Lost disk space after Avast anti-virus scan

I used the free Avast anti-virus software to scan my MacBook Air running Mavericks and after the scan about 30 GB of disk space seems to have vanished according to software like Freespace but not according to the Finder's "Get Info" function. Where is it? How can I get it back?

In anticipation that most of the responses here would be to uninstall Avast, I did that and it did not solve the problem.
So I ask again: Does anyone have a solution that is actually a solution.
I am not interested in yet another lecture on how Macs don't have viruses etc etc. Whether or not they do now, there is no real reason they can't should some teenager in Russia take on the challenge of writing such viruses. Also, I use Parallels to run some essential Windows applications and I'm sure I will pick up viruses that way. I have the Windows version of Avast installed in the virtual machine and so far no problems with it--and that I'm keeping unless someone has a better idea for free Windows anti-viral software.
I am a long-time Mac user and I've heard it all, so spare me. Just advise if you have a specific solution to the problem I've got.

Can't install avast anti virus on my laptop, error self exstract

Windows could not start avast! Anti virus service on local computer.
Error 1075: the dependency service does not exist or has been marked for deletion.
Please help me

Can you post your full model number and operating system.
A general answer is to only have one anti virus installed, Toshiba normally has a preinstalled antivirus program and it needs to be removed before installing avast anti virus.
Avast can give you problems even BSOD if windows defender is turned on so go to control panel then windows defender, under administrative - uncheck the use this program to turn off windows defender.
Then if you are using Avast internet security you also need to turn off windows firewall so you are not running 2 firewalls.
S70-ABT2N22 Windows 7 Pro & 8.1Pro, C55-A5180 Windows 8.1****Click on White “Kudos” STAR to say thanks!****

Anti-virus protection for my IMAC?

Should I invest in anti-virus software?
What should I use?
I only surf the net, don't download, I'm the only one who uses my computer.
Thanks!!!

Most commercial ("invest in") AV and internet security packages for Mac cause many more problems than they fix. These companies make money off people coming from the Windows world who get hammered with intrusions as soon as they plug in their computer. Some have even invented news of threat to use fear as a marketing tool. May the bedbugs from a thousand cheap hotels invade their shorts!
I've run without AV software since getting our first mac abotu1990. Their are threats but reasoanable computer habits (like not clicking on something that looks fishy, say, doesn;t have a "cancel" button to click) can preven tt most attacks better than software.
If you feel the need for AV software, there are two free packages that work well and with little impact on performance. Google up "ClamXav" and "Sophos."

Should I buy anti-virus software for new iMac?

Just purchased my first iMac and Ive been reading that I really dont need antivirus protection, is this true? In the past I've always bought Norton Internet Security for my pc's.

You certainly don't need to BUY it. The free ClamXav will do:
There are many forms of ‘Malware’ that can affect a computer system, of which ‘a virus’ is but one type, ‘trojans’ another. Using the strict definition of a computer virus, no viruses that can attack OS X have so far been detected 'in the wild', i.e. in anything other than laboratory conditions. The same is not true of other forms of malware, such as Trojans. Whilst it is a fairly safe bet that your Mac has NOT been infected by a virus, it may have another security-related problem, but more likely a technical problem unrelated to any malware threat.
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-2435
The User Tip (which you are welcome to print out and retain for future reference) seeks to offer guidance on the main security threats and how to avoid them.
More useful information can also be found here:
http://www.reedcorner.net/mmg/

What is the best downloadable clean/anti virus software for the IMac

I want to clean up and protect my iMac but there seems to be so many bogus sites out there. What is a good one?

Check out User Tip: Viruses, Trojans, Malware - and other aspects of Internet Security and Mac Malware Guide.

Is this Firefox 5 now compatible with avast anti-virus?

When Firefox 5 was first released, there was a message that it was not compatible with Avast. Has this problem been resolved?

Try the new pre-release version of Avast.
*http://forum.avast.com/index.php?topic=80362.0

Should i run an anti virus program on my IMAC

I just got hacked into my imac last week i was running norton 360 as well but it didn't catch the thief. Does anyone here use antivirus? I did a total scan and it didn't pick up my issue so i did a total wipe off of mac and starting all over again. I am scared afther that happened, looking for other imac users advice. Thanks

Welcome to the Apple Support Communities
We don't recommend any antivirus for OS X because they are useless (specially, commercial antiviruses like Norton). If you want to install an antivirus, install Sophos or ClamXav. See > http://www.reedcorner.net/mmg
As you were hacked, instead of installing an antivirus, you may want to install Little Snitch > http://www.obdev.at/products/littlesnitch/index.html This app allows you to control all processes between your iMac and the Internet, and viceversa, so you have a total control over your Internet connection. If you find a strange process, just deny it. This is the best way to prevent hacks. Also, it's good to increase the security of your router (for example, using a WPA2 password, MAC filters...)

What's the best anti-virus program for my iMac?

Any help is appreciated.

ClamXav 2.2.5. But if you are concerned about the recent malware issues then see:
Helpful Links Regarding Flashback Trojan
Visit Thomas Reed's site for insight and help: Mac Malware Guide
A Google search can reveal a variety of alternatives on how the remove the trojan should your computer get infected. This can get you started. However, be careful about what you do as new variants of the malware circumvent the efforts of earlier tools.
Also see Apple's article About Flashback malware.
Apple has released Java updates for Snow Leopard and Lion users:
Java for OS X Lion 2012-003; available only for users of Lion with Java installed.
Java for Mac OS X 10.6 Update 8; available only for users of Snow Leopard.
Flashback malware removal tool; available only for users of Lion without Java installed.
Install whichever shows up in Software Update. It removes the malware (if present), updates Java (if present) and tightens up Java settings for the future. You may download from Apple's web site instead of using Software Update, but it's important to know which one to get, because the other two won't work for you.
For the truly paranoid see 10 Simple Tips for Boosting The Security Of Your Mac.

I use iGoogle as my start page and none of the modules will work. I use Avast anti virus. The modules work in chrome and opera. can you help

I have checked my setting and options and I cant seem to get igoogle to load the modules to load.

Ok, to copy the Drive from one to another, get carbon copy cloner to make an exact copy of your old HD to the New one...
http://www.bombich.com/software/ccc.html
Or SuperDuper...
http://www.shirt-pocket.com/SuperDuper/
Believe it or not, anything on the Desktop uses 3 times the Resources of the Mac than if stored elsewhere, I can note a slowdown from just 30 items on the Desktop on a really fast Mac, so the less the better on the Desktop.
DW will not tell you about Bad Sectors, it's just the very best at Repair Directory damage & such.
At this point I think you should get Applejack...
http://www.macupdate.com/info.php/id/15667/applejack
After installing, reboot holding down CMD+s, (+s), then when the DOS like prompt shows, type in...
applejack AUTO
Then let it do all 6 of it's things.
At least it'll eliminate some questions if it doesn't fix it.
The 6 things it does are...
Correct any Disk problems.
Repair Permissions.
Clear out Cache Files.
Repair/check several plist files.
Dump the VM files for a fresh start.
Trash old Log files.
First reboot will be slower, sometimes 2 or 3 restarts will be required for full benefit... my guess is files relying upon other files relying upon other files! :-)
Disconnect the USB cable from any Uninterruptible Power Supply so the system doesn't shut down in the middle of the process.

LMS 4.2.2 DFM still not possible to disable Duplicate IP false positives?

I found one discussion about Cisco Works 2.6 where it is pointed out that duplicate IP alerts cannot be disabled in LMS.
Now I have a installation with 2 core switches, one has all VLAN Interfaces up, the second one the same interfaces with SAME IP addresses in shutdown state.
DFM still recognizes these similar IP configuration on two boxes as duplicate ip situation, but it shouldn't because they are all shutdown.
Is it possible to disable these false positives in DFM?
Thanks for any hints!

I found one discussion about Cisco Works 2.6 where it is pointed out that duplicate IP alerts cannot be disabled in LMS.
Now I have a installation with 2 core switches, one has all VLAN Interfaces up, the second one the same interfaces with SAME IP addresses in shutdown state.
DFM still recognizes these similar IP configuration on two boxes as duplicate ip situation, but it shouldn't because they are all shutdown.
Is it possible to disable these false positives in DFM?
Thanks for any hints!

What is the best anti-virus software for my Mac?

What is the best anti-virus software for my IMAC?

If you are still using OS X 10.4.x "Tiger" please confirm.
atpatt wrote:
What is the best anti-virus software for my IMAC?
Use what Apple already provided.
There will always be threats to your information security associated with using any Internet - connected communications tool:
You can mitigate those threats by following commonsense practices
Delegating that responsibility to software is an ineffective defense
Assuming that any product will protect you from those threats is a hazardous attitude that is likely to result in neglecting point #1 above.
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 "clean up", "speed up", "optimize", "boost" or "accelerate" your Mac; to "wash" it, "tune" it, or to make it "shiny". Those claims are absurd.Such products are very aggressively marketed. They are all scams.
Never install pirated or "cracked" software, software obtained from dubious websites, or other questionable sources.
Illegally obtained software is almost certain to contain malware.
"Questionable sources" include but are not limited to spontaneously appearing web pages or popups, download hosting sites such as C net dot com, Softonic dot com, Soft pedia dot com, Download dot com, Mac Update dot com, or any other site whose revenue is primarily derived from junk product advertisements.
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.

Getting rid of anti virus

I once put Norton anti-virus on my 20" iMac. That was like 4 yrs ago. It's out of date and I want to remove it but I can't get rid of the virus scan no matter what I do. I have trashed every known instance of Norton in Applications etc, searched with spotlight, looked thru libraries, utilities etc and I still can't find where that darn virus scan is? Any ideas?

You can download the uninstaller directly from Symantec’s site.
If that does not work:
Uninstalling Software: The Basics
Most OS X applications are completely self-contained "packages" that can be uninstalled by simply dragging the application to the Trash. Applications may create preference files that are stored in the /Home/Library/Preferences/ folder. Although they do nothing once you delete the associated application, they do take up some disk space. If you want you can look for them in the above location and delete them, too.
Some applications may install an uninstaller program that can be used to remove the application. In some cases the uninstaller may be part of the application's installer, and is invoked by clicking on a Customize button that will appear during the install process.
Some applications may install components in the /Home/Library/Applications Support/ folder. You can also check there to see if the application has created a folder. You can also delete the folder that's in the Applications Support folder. Again, they don't do anything but take up disk space once the application is trashed.
Some applications may install a startupitem or a Log In item. Startupitems are usually installed in the /Library/StartupItems/ folder and less often in the /Home/Library/StartupItems/ folder. Log In Items are set in the Accounts preferences. Open System Preferences, click on the Accounts icon, then click on the LogIn Items tab. Locate the item in the list for the application you want to remove and click on the "-" button to delete it from the list.
Some software use startup daemons or agents that are a new feature of the OS. Look for them in /Library/LaunchAgents/ and /Library/LaunchDaemons/ or in /Home/Library/LaunchAgents/.
If an application installs any other files the best way to track them down is to do a Finder search using the application name or the developer name as the search term. Unfortunately Spotlight will not look in certain folders by default. You can modify Spotlight's behavior or use a third-party search utility, Easy Find, instead. Download Easy Find at VersionTracker or MacUpdate.
Some applications install a receipt in the /Library/Receipts/ folder. Usually with the same name as the program or the developer. The item generally has a ".pkg" extension. Be sure you also delete this item as some programs use it to determine if it's already installed.
There are many utilities that can uninstall applications. Here is a selection:
AppZapper
Automaton
Hazel
CleanApp
Yank
SuperPop
Uninstaller
Spring Cleaning
Look for them at VersionTracker or MacUpdate.
For more information visit The XLab FAQs and read the FAQ on removing software.

What's the best anti-virus protection?

What's the best anti-virus protection for my imac?

If you are running an older, unsupported OS like Leopard or Tiger, then you might consider running Sophos Home (free). Since Apple is no longer providing security updates for these, it could be a good idea.
http://www.sophos.com/en-us/products/free-tools/sophos-antivirus-for-mac-home-ed ition.aspx
System requirements
Not sure if Sophos Anti-Virus will work on your Mac? These are the technical requirements:
    Mac with Intel or PowerPC processor
    256 MB of memory
    150 MB of available disk space
    Mac with OS X 10.4 (Tiger), 10.5 (Leopard), 10.6 (Snow Leopard), 10.7 (Lion) or 10.8 (Mountain Lion)
    Supports all Apple Mac hardware including iMac, MacBook, MacBook Pro and the new MacBook Air

Possible avast! anti-virus false positive on imac

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