Anti Virus - Needed?

I'm new to Apple... just got a new iMac.
I'm a Comcast high speed internet customer and they offer the Norton Anti Virus Suite for free. I noticed they have a Mac version.
Would it be wise to install it on my iMac and Mac Book Pro?

No, it would be most unwise. Norton and Mac don't get along at all. It will bork your system.
I would use NO AV software, unless in a mixed environment atmosphere, it will cause more problems than it solves. There are NO viruses that attack a Mac, so it is like getting a vaccine against a disease that doesn't exist yet.
While there are no known viruses that attack Mac OS X at the present time it is possible for other malware to get onto your Mac.
So I go to lengths to protect my user. A hosed system can be replaced but a compromised user folder is compromised forever. Along with all your important data like bank records, credit cards, ... I.e. your "identity" stolen.
The best way to avoid that is by being a frustrating target. Use your built-in firewall which is industrial strength and/or a hard wired router, downloading only from "trusted" sites, installing all security updates and being careful about what you give administrative power to.
Don't use Limewire or any other P2P service to download your software, get it from reputable sources. In addition, always keep at least your users backed up, preferably a clone of your entire system on a separate disk. And put your sensitive passwords, bank accounts, credit card numbers in a "secure note" in a new keychain or in an encrypted folder.
If and when a Mac virus does appear it will be headline news and you can download the AV software then. If you feel you have to run an AV program I'd suggest ClamXav a mac friendly freeware app that is very stable with OS X. It will check for known virus signatures at any rate.
Hope this helps.
EDIT: Here is a more through document on Mac security...
http://www.reedcorner.net/thomas/guides/macvirus/
-mj
Message was edited by: macjack

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1. This comment applies to malicious software ("malware") that's installed unwittingly by the victim of a network attack. 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 victim's computer. 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, but internally Apple calls it "XProtect." The malware recognition database is automatically checked for updates once a day; 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.
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. OS X 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 presumably effective against known attacks, but maybe not against unknown attacks. It notifies you if it finds malware, but otherwise there's no user interface to MRT.
5. XProtect, Gatekeeper, and MRT reduce the risk of malware attack, but they're not absolute protection. The first and best line of defense is always 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 malware attacker. If you're smarter than he thinks you are, you'll win.
That means, in practice, that you never use software that comes from an untrustworthy source, or that does something inherently untrustworthy. How do you know what is trustworthy?
Any website that prompts you to install a “codec,” “plug-in,” "player," "extractor," or “certificate” that comes from that same site, or an unknown one, is untrustworthy.
A web operator who tells you that you have a “virus,” or that anything else is wrong with your computer, or that you have won a prize in a contest you never entered, is trying to commit a crime with you as the victim. (Some reputable websites did legitimately warn visitors who were infected with the "DNSChanger" malware. That exception to this rule no longer applies.)
Pirated copies or "cracks" of commercial software, no matter where they come from, are unsafe.
Software of any kind downloaded from a BitTorrent or from a Usenet binary newsgroup is unsafe.
Software that purports to help you do something that's illegal or that infringes copyright, such as saving streamed audio or video for reuse without permission, is unsafe. All YouTube "downloaders" are in this category, though not all are necessarily harmful.
Software with a corporate brand, such as Adobe Flash Player, must be downloaded directly from the developer’s website. If it comes from any other source, it's unsafe.
Even signed applications, no matter what the source, should not be trusted if they do something unexpected, such as asking for permission to access your contacts, your location, or the Internet for no obvious reason.
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.
Follow the above guidelines, 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 from malware.
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. Any database of known threats is always going to be out of date. Most of the danger is from unknown threats. If you need to be able to detect Windows malware in your files, use one of the free anti-virus products in the Mac App Store — nothing else.
Why shouldn't you use commercial "anti-virus" products?
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," doesn't have these drawbacks. That doesn't mean it's entirely safe. 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. 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 virus or trojan it is, but do you care? In practice, there's seldom a reason to use the software unless a network administrator requires you to do it.
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 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 is going to be infected every time you install an application, read email, or visit a web page. But neither should you have the false idea that you will always be safe, 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. Nothing can lessen the need for safe computing practices.

Logging on remotely to a Windows PC; anti-virus needed?

I have always been told that I don't need any anti-virus with a Mac; so I only have ClamXav (as recommended on this forum). However I am now working from home by remotely logging on to my work PC, via Java. The work PC is Windows, & I'm wondering if I do need anti-virus now... I can't quite get my head round how it works; but basically I log on via a web page, & I then get a replica of my workstation on my Mac; including my work Outlook e-mails; the company version of Word (which is different to mine); Windows IE etc. So everything I do from my work Outlook - e.g. opening Word doc's; going onto web pages etc - uses the Company applications - not the ones on my Mac. It is all accessed remotely though; so those applications are not actually installed physically on my Mac. Has anyone got any ideas / advice about anti-virus? I think - hope - my Company has a pretty good anti-virus system in place itself however, so I assume I would be protected by this?

If all you're doing is controlling another computer, no, nothing on the computer you're controlling is running on your Mac - all that's happening is that keboard and mouse commands are being sent to your Windows system and the video from your PC is being sent to your mac - so nothing will affect your Mac. Therefore no additional antivirus or other anti-malware software will be needed on the Mac.
Regards.

Anti virus needed for Parallels running Windows??

I am unable to figure out if anti virus protection is needed for Windows when running it in Parallels! If it's virtual, is it vulnerable or is there the issue of passing on infected files???? A search of Apple discussion forums reveals no results for "Parallels" and anti virus or anything else. Anyone know?
Zones says no protection needed but to be safe it wouldn't hurt. Parallels says go ahead and use protection even though you're not using bootcamp, it wouldn't hurt. I can't get a definitive answer. I realize that bootcamp would require protection.
I have already been on the net in windows (virtual) and it keeps telling me I need virus protection. help please?

soloartist,
1. A Windows virus can still infect the Windows virtual machine and kill it
dead or make it <editorial comment>more</editorial comment> useless.
(No known Windows infections get out of the VM sandbox into
OS X. So far, anyway.)
2. Windows itself is asking for antivirus.
3. Plus, the company that made the virtual machine suggests you use
antivirus.
Isn't that a trifecta?
Yes, use antivirus, unless you enjoy recreating and updating the virtual
machine from scratch, losing your data from the original VM along the way...
-Wayne

Do I need an anti-virus program on a MacBook?

I'm a brand new MacBook user. Just bought the 13-inch aluminum body version from Club Mac and it was delivered yesterday. The notebook is actually for my wife to be able to use while she's recovering from knee surgery in a couple of weeks and I thought it was time to branch our family out from PC's and Windows. So I'm setting up the MacBook for her to be able to use it...and for our family to get more literate on a Mac and it looks great! My question is do I need an anti-virus program and if so, which is a good one recommended by Mac users? NOTE: because my wife is familiar with Windows, I had XP service pack 3 installed and have VM Ware Fusion onboard to be able to run both Windows and Leopard for her convenience and to assist us. So there MAY be some Windows use on this MacBook, at least at first. All responses, replies, suggestions, welcome. THANK YOU.

Do You Need Anti-Virus Protection for Your Mac?
According to Rich Mogull's article, Should Mac Users Run Antivirus Software?,
"The reality is that today the Mac platform is relatively safe. There are hundreds of thousands of viruses and other malicious software programs floating around for Windows, but less than 200 are known to target the Mac, and many of those are aimed at versions of the Mac OS prior to Mac OS X (and thus have no effect on a modern Mac).
It's not that Mac OS X is inherently more secure against viruses than current versions of Windows (although it was clearly more secure than Windows prior to XP SP2); the numerous vulnerabilities reported and patched in recent years are just as exploitable as their Windows equivalents. But most security experts agree that malicious software these days is driven by financial incentives, and it's far more profitable to target the most dominant platform."
Mr. Mogull is a computer security expert. I recommend reading the entire article as it is quite informative.
For additional information on viruses, trojans, and spyware visit The XLab FAQs and read the FAQs on viruses and spyware.

Once and for all: Do I need anti-virus software for my Mac?

I've always heard that you don't really need anti-virus or anti-spyware software for Macs - but I do wonder that there has to be viruses about that would affect Macs?
I do alot of creative and professional work on my Mac. The data on it, means a **** of a lot to me, and I'd hate for my Mac to be infected with something horrible.
Could anybody please tell me if I really do need anti-virus or anti-spyware software for my iMac? And if I do, which one do you recommend? (Ideally I would want it to be cheap and not hog lots of system resources)...
Thank you!

Hi
I can only give you my personal experience on this one.
The short answer is "no". I've been using macs for the past 4 years, my partner for many more. Neither I nor she have an anti virus program installed.
We both use firewall on both the os x setup and via our router. I tend to install the security updates posted by apple after they are released and check the forums to be aware of any potential problems.
A much better idea is to back up your important projects etc on a regular basis to dvd and external hard disk.
I have one experience of anti-virus software on the mac:
About 2.5 years ago i thought i had a virus - my diskspace was being eaten up at a very very fast rate - and i was worried. Found out that the os update from 10.3.2 to 10.3.5 had an incompatability issue with the mcafee shock game controller driver (obscure eh!)
Anyway, after this experience and deleting the driver which i no longer needed, i decided to err on the side of caution and tried out both mcafee and norton. Both of which slowed down my system and norton especially caused problems when i was running logic pro etc. really really annoying.
Once i'd got over my "insecure" stage and having spoken to other mac users i realised anti-virus software was causing many many more issues than resolving any - and besides since then i have still had no problems and have never come across any viruses on mac os x.
It all depends on what makes you feel safer. Personally i wouldn't recommend ant-virus programs... i wonder if anyone has any positive experiences of anti-virus software on the mac?
that's my 0.02 pence

Do I need to have any type of anti-virus or malware, spyware protection for my Macbook Pro?

My Macbook is a year old. When I bought it, I was told by several people that I would not need any type of anti-virus software or anything to protect my computer because Mac did not get infected that often. However, I have had people today tell me that I do need protection for my computer. My Mac runs about as good as the day I got it, but I really don't want anything to happen to it. If I need to get an anti-virus, or malware/spyware software, what programs would y'all recomend? I am just looking for information. Thanks!

1. This comment applies to malicious software ("malware") that's installed unwittingly by the victim of a network attack. 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 victim's computer. 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, but internally Apple calls it "XProtect." The malware recognition database is automatically checked for updates once a day; 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.
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. OS X 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 presumably effective against known attacks, but maybe not against unknown attacks. It notifies you if it finds malware, but otherwise there's no user interface to MRT.
5. XProtect, Gatekeeper, and MRT reduce the risk of malware attack, but they're not absolute protection. The first and best line of defense is always 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 malware attacker. If you're smarter than he thinks you are, you'll win.
That means, in practice, that you never use software that comes from an untrustworthy source, or that does something inherently untrustworthy. How do you know what is trustworthy?
Any website that prompts you to install a “codec,” “plug-in,” "player," "extractor," or “certificate” that comes from that same site, or an unknown one, is untrustworthy.
A web operator who tells you that you have a “virus,” or that anything else is wrong with your computer, or that you have won a prize in a contest you never entered, is trying to commit a crime with you as the victim. (Some reputable websites did legitimately warn visitors who were infected with the "DNSChanger" malware. That exception to this rule no longer applies.)
Pirated copies or "cracks" of commercial software, no matter where they come from, are unsafe.
Software of any kind downloaded from a BitTorrent or from a Usenet binary newsgroup is unsafe.
Software that purports to help you do something that's illegal or that infringes copyright, such as saving streamed audio or video for reuse without permission, is unsafe. All YouTube "downloaders" are in this category, though not all are necessarily harmful.
Software with a corporate brand, such as Adobe Flash Player, must be downloaded directly from the developer’s website. If it comes from any other source, it's unsafe.
Even signed applications, no matter what the source, should not be trusted if they do something unexpected, such as asking for permission to access your contacts, your location, or the Internet for no obvious reason.
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.
Follow the above guidelines, 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 from malware.
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. Any database of known threats is always going to be out of date. Most of the danger is from unknown threats. If you need to be able to detect Windows malware in your files, use the free software ClamXav— nothing else.
Why shouldn't you use commercial "anti-virus" products?
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. ClamXav doesn't have these drawbacks. That doesn't mean it's entirely safe. 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.
ClamXav is not needed, and should not be relied upon, for protection against OS X malware. It's useful only for detecting Windows malware. 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
ClamXav may be able to tell you which particular virus or trojan it is, but do you care? In practice, there's seldom a reason to use ClamXav unless a network administrator requires you to run an anti-virus application.
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 is going to be infected every time you install an application, read email, or visit a web page. But neither should you have the false idea that you will always be safe, 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. Nothing can lessen the need for safe computing practices.

DO I need Anti-Virus for my Macbook Pro w/Retina Display?

I am currently awaiting a MacBook Pro w/Retina Display and I am having an ongoing discussion with some work colleagues, since the Flashback Trojan appeared to infiltrate Mac's back in early 2012... DO I need Anti-Virus.. My argument is no, but everybody elses is yes!
I would love to see some indepth feedback to send my PC lovers running!
Thanks in advance.
Regards,
Joe

1. This comment applies to malicious software ("malware") that's installed unwittingly by the victim of a network attack. 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 victim's computer. 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.
2. All versions of OS X since 10.6.7 have been able to detect known Mac malware in downloaded files. This feature is transparent to the user, but internally Apple calls it "XProtect." The recognition database is automatically updated once a day; 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 (see below.)
It only applies to software downloaded from the network. Software installed from a CD or other media is not checked.
3. Starting with OS X 10.7.5, there has been another 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 actually been tested by Apple (unless it comes from the Mac App Store), 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. For most practical purposes, applications recognized by Gatekeeper as signed can be considered safe.
Gatekeeper 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 find some other way to evade Apple's controls.
For more information about Gatekeeper, see this Apple Support article.
4. Beyond XProtect and Gatekeeper, there’s no benefit, in most cases, from any other automated protection against malware. The first and best line of defense is always your own intelligence. 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 malware attacker. If you're smarter than he thinks you are, you'll win.
That means, in practice, that you never use software that comes from an untrustworthy source. How do you know whether a source is trustworthy?
Any website that prompts you to install a “codec,” “plug-in,” "player," "archive extractor," or “certificate” that comes from that same site, or an unknown one, is untrustworthy.
A web operator who tells you that you have a “virus,” or that anything else is wrong with your computer, or that you have won a prize in a contest you never entered, is trying to commit a crime with you as the victim. (Some reputable websites did legitimately warn users who were infected with the "DNSChanger" malware. That exception to this rule no longer applies.)
Pirated copies or "cracks" of commercial software are likely to be infected.
Software of any kind downloaded from a BitTorrent or from a Usenet newsgroup is unsafe.
Software with a corporate brand, such as Adobe Flash Player, must be downloaded directly from the developer’s website. No intermediary is acceptable.
5. Java on the network (not to be confused with JavaScript, to which it's not related) is a weak point in the security of any operating system. If a Java web plugin is not installed, don't install one unless you really need it. If it is installed, you should disable it (not JavaScript) in your web browsers. Few websites have Java content nowadays, so you won’t be missing much. This setting is mandatory in OS X 10.5.8 or earlier, because Java in those obsolete versions has known security flaws that make it unsafe to use on the Internet. The flaws will never be fixed. Regardless of version, experience has shown that Java can never be fully trusted, even if no vulnerabilities are publicly known at the moment.
Follow these guidelines, and you’ll be as safe from malware as you can reasonably be.
6. Never install any commercial "anti-virus" or "Internet security" products for the Mac, as they all do more harm than good, even supposing that they do any good at all. If you need to be able to detect Windows malware in your files, use the free software ClamXav — nothing else.
Why shouldn't you use commercial "anti-virus" products?
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.
7. ClamXav doesn't have these drawbacks. That doesn't mean it's entirely safe. 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.
ClamXav is not needed, and should not be relied upon, for protection against OS X malware. It's useful only for detecting Windows malware. Windows malware can't harm you directly (unless, of course, you use Windows.) Just don't pass it on to anyone else. Windows malware attachments in email are almost always easy to recognize without computer assistance.
8. The greatest danger posed by anti-virus software, in my opinion, is its effect on human behavior. When people install such software, which does little or nothing to protect them from emerging threats, they get a false sense of security from it, and then they may behave in ways that expose them to higher risk. Nothing can lessen the need for safe computing practices.
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.

Anti Virus Software....Do I need It On My MacBook Pro??

Hi
I was given the impression I didn't need anti virus software for my 1yo MacBook Pro?? am I correct or stupid? Please Help.....

Roadzee wrote:
Even better thanks...the question I have now is..do you recommend AV software if so what one is the best??
Thanks.
I have been using Macs with OS X since the day OS X was launched on March 24, 2001. (BTW, an experience I will never ever ever repeat, despite the overall clunkiness of OS9.) I have never downloaded, purchased, used, tested, or thought about using an anti-virus software. I still don't. In all that time, I have never experienced malware, trojan horses, and/or viruses. Whenever I read about these trojan horses or malware, it almost always requires user acquiesence, rarely superior coding of the malware.
Look, don't allow anything to have root access to your computer by keeping it secure by password, and only enter the password when you're sure of what's requiring it. Don't download anything that you don't trust. In other words, download Adobe Photoshop from Adobe's website, not from some random website in the Ukraine. I don't like anti-virus software because they gobble up system resources that don't need to go something like protecting the Mac from nonexistent trouble.
But if you're going to lose sleep over this, then get ClamXav. But it's really a waste of your time.

Do we need anti virus softwares for Mac book pro?

do we need antivirus softwares for mac book pro?

That is a complex question, whose answer depends greatly on you. See my Mac Malware Guide for the information you need to protect yourself and to make a decision about anti-virus software.

Anti-Virus Software Needed @ Work in a Windows/Exchange 2003 Environment?

I'm taking delivery of a new 24" iMac, and will be using it at work in a Windows/Exchange 2003 environment. I'll be using VMWare Fusion, and Win XP Pro 32 bit to run our business-critical applications. Also, until Office for Mac 2007 is released in January, I'll be using Office 2007 (including Outlook 2007) from the Windows partition. I'm the "pioneer" (the first) Mac user at our company and want to get this right. Regarding antivirus sofware (which I've never had to worry about on my home G5):
1.) Do I need it at all?
2.) Do I need to get it for the Windows partition? the OSX partition? both?
3.) If I need anti-virus software for either or both, what is recommended, given my workstation/network setup? will the same product work for both OSX and XP? or do I need separate programs for each?
Thanks!

For the windows antivirus software I would avoid Norton. I've had problems with every version of it that I've used, both on my own pc and others. I've also had problems with Mcafee. Go with either ZoneAlarm Internet Security Suite, Kaspersky Antivirus, or AVG from Grisoft. AVG has caught things that norton doesn't. I use the free version in conjunction with ZoneAlarm on my XP machine, but they have business versions. Zonealarm's firewall works very well. The inbound/outbound program control is hard to beat. Their anti-spyware/adware solution leaves a little to be desired though. For the ultimate antivirus protection on a PC, you really need to run redundant programs.
However for Mac, I can't recommend anything, since I'm not yet a mac user. Not yet.

Do i need to get an anti virus program for my mac mini

do i need to get an anti-virus software?

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.

I have a mac book pro osx 10.7.5. Do I need to get anti-virus security software

I have a mac book pro osx 10.7.5. i do not have a virus checker. Do I need to get anti-virus security software that will protect against the new virus? And what would you recommend.
Thanks

There will always be a "new virus". Is this the recent threat you are concerned about?
http://www.bbc.com/news/technology-27681236
It only affects Windows PCs, which is usually the case.
have a mac book pro osx 10.7.5. i do not have a virus checker.
Those two statements contradict each other. OS X 10.7.5 already includes everything it needs to protect itself from viruses and malware. Keep it that way with software updates from Apple. Installing third party "anti-virus" software cannot possibly protect you from all threats, whether they exist today, or may occur at any time in the future. Such products are far more likely to cause random instability, crashes, loss of data, time, money, or all the above, while providing nothing other than a misplaced sense of complacency - a threat all to itself.
The sky is perpetually falling for so-called "news" outlets. It has been so for many people since the beginning of time, and it will remain so for all eternity. Don't confuse fearmongering with becoming informed.
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.

I have a brand new ipad2 connecting to iTunes 10.7 for the first time... It is not recognizing it in iTunes. It on windows and anti virus is off. What do I need to do?

I have a brand new ipad2 connecting to iTunes 10.7 for the first time... It is not recognizing it in iTunes. It on windows and anti virus is off. What do I need to do?

On the apple website that is correct i beleive.... but i have an italian american express and am able to purchase stuff here in the US.
I mean, i dont think it really matters

Is it true that Macs do not need anti-virus or spyware?

I know nothing about computers. This is our first Mac. We purchased our mac mini in Oct. 09. My nephew set it up & told us we didn't need a anti-virus or spyware. I just use the e-mail & my daughter uses it for school & face book. It has been slow and has been locking up on us. Last night I had to force close. I took a look in security and it said the firewall was not on. Is this a problem? Should it be on?

Welcome to the Apple discussions.
It's irrelevant that there are no current mac virus's, as, like the stock market, current performance isn't a gauge of the future. In addition, use of an antivirus is good if you receive files that you might forward on to your Windows friends, and want to ensure you're not passing on any virus's. I use, and recommend, ClamXAV, also recommended above. It's available from http://www.clamxav.com . I use it to scan mail and downloads.
You do want your mac firewall turned on. Click systems preferences, security, click the firewall tab, click allow only essential connections (if not already highlighted), click advanced, and enable firewall logging and enable stealth mode. If your daughter uses iTunes to download music, you don't need to do anything else. If she uses Bittorrent, then you should open some ports. Watching video's won't be impacted with the firewall enabled.
I've also installed a program named Little Snitch, which requires me to specifically allow any outbound communication. Once authorized, you don't have to do anything again. So, if something were to sneak through, it wouldn't be able to phone home without authorization. Little Snitch is available from http://www.obdev.at/products/littlesnitch/index.html
On your overall performance, one thing you might do is to run OnyX, available from http://www.titanium.free.fr/pgs/english/apps.html . Run the tasks on the maintenance and cleaning tabs, which does disk maintenance. Before running any disk maintenance, you should have a hard drive backup. A number of people have used this and found it improved performance.

Anti Virus - Needed?

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