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HT4651: Mac OS X Snow Leopard and malware detection

Learn about Mac OS X Snow Leopard and malware detection

HT4651 how do I check if I got any malware on my computer?

2398 Views 7 Replies Latest reply: Jun 29, 2012 3:15 PM by R C-R RSS
TexMexClau Calculating status...
Currently Being Moderated
Jun 29, 2012 4:11 AM

my website gave me a warning that I could have malware and it is advised to no view it, so since I have been updating my website recently I'm affraid that I could have gotten some malware on my mac. How do I check if there is malware on my mac?

MacBook Pro, how to check for malware
  • mende1 Level 10 Level 10 (89,490 points)

    You can download ClamXav. It's a free antivirus and it's the best for the Mac

  • varjak paw Level 10 Level 10 (167,195 points)

    No web site can reliably check for malware on a Mac; that requires software to be installed on your computer. So this claim is probably erroneous. What is it on your site that is claiming you have malware? Is it your site host? Or something else, and if so what it claiming this and what does it say?

  • varjak paw Level 10 Level 10 (167,195 points)

    If you mean this message:

     

    Warn.jpg

     

    and it didn't reappear after a browser refresh, then it's almost certain that it was an erroneous message from Google's Safe Browsing system, something which is not uncommon. If your web site is running on a Mac, the chances of it having malware are very small, their being only a handful of trojan-horse programs and no confirmed viruses nor worms, and ClamXav mentioned above should be able to detect those few trojans that do exist.

     

    Regards.

  • varjak paw Level 10 Level 10 (167,195 points)

    If problems reoccur, you will need to talk to your site host, as it would be their servers that are being flagged in Google's database as containing malware. Many such reports are erroneous, but it would be something your host would have to address.

     

    As to your system, again, there have never been any viruses or worms on Mac OS X, and only a few trojans, most of which Apple blocks from installing in Mac OS X 10.6 and later. So I definitely do not recommend installing Norton or any of the other commercial antivirus applications; most such applications, particularly those that have a constant automatic scanning feature, just cause problems. ClamXav should be all you would need, should you really feel the need.

     

    Regards.

  • R C-R Level 6 Level 6 (13,830 points)

    varjak paw wrote:

    As to your system, again, there have never been any viruses or worms on Mac OS X, and only a few trojans, most of which Apple blocks from installing in Mac OS X 10.6 and later. So I definitely do not recommend installing Norton or any of the other commercial antivirus applications...

    Flashback has evolved beyond the simple trojan stage into "drive by" malware that doesn't require a user to do anything besides visit an infected site. (The Java vulnerability that makes this possible has been patched in recent security updates, but it is no longer strictly true that only trojans exist in the wild for OS X.)

     

    Plus, since this Mac is being used to upload files to a web site, it is worth considering using AV software on it to detect & remove Windows malware that might be uploaded to the site, triggering a warning like above for users that visit it.

     

    Norton doesn't have a good track record with OS X but a few other commercial AV apps are worth considering. I use Sophos Home Edition for Macs & have had no problems with it.

     

    See Mac Malware Guide : Do I need anti-virus software? for an overview of the subject.

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