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Old Jun 19, 2011, 6:33 PM   #31
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Originally Posted by JimC View Post
If you look at tests of previously unknown malware at sites like http://www.av-comparatives.org , none of them flag more than about 60% of it as being malware, even when heuristics are set to their highest settings. See this report:

http://www.av-comparatives.org/image...ro_may2011.pdf
Personally, I use Avira Antivir as one of my defense layers when running in Windows, and ESET NOD32 as one of my defense layers when running in Linux (and I run in Linux most of the time when I'm online, as less malware targets it compared to other Operating Systems)..

Those products (Avira Antivir, ESET NOD32) tend to be better than most at blocking previously unknown malware (using advanced heuristics to detect malware that no signatures exist for). Again, see the above tests of previously unknown malware from av-comparatives.org. They're all bad about detecting brand new (unique, previously unknown) malware (none of them detect more than about 60%) and over 60,000 new samples per day are being seen by antivirus companies now.

So, I use a number of other defensive layers, too (not running as an Admin/Root user in Windows or Linux, using the noscript extension in Firefox, running the Finjin browser plugin from M86 Security for web page analysis, making sure all of my operating systems, browsers, and plugins are up to date with the latest patches, etc.). i also run any software I plan to install through sites like http://www.virustotal.com (so it's checked by over 40 different antivirus scanners).

Most malware comes from Legit web sites now (where they've been hacked into with exploits planted that are designed to take advantage of users with unpatched operating systems, browsers and plugins). So, being careful about where you visit or what you click on is not enough anymore.
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Old Jun 22, 2011, 7:15 AM   #32
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Download the desired older version: http://www.oldapps.com/firefox.php
Uninstall the existing FF version and install the download. In the past that worked for me.
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Old Jun 22, 2011, 8:03 AM   #33
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You can find old versions of Firefox on Mozilla's mirrors (there's no need to use third party download sites, especially since there is a greater chance you'd get a download that's infected with malware when you get an app from somewhere other than it's developer).

ftp://ftp.mozilla.org/pub/mozilla.org/firefox/releases/

But, using an older version is asking for trouble, as a *lot* of security vulnerabilities are usually patched with each new release.

http://www.mozilla.org/security/known-vulnerabilities/

The same thing applies to plugins (Adobe Flash Player, Acrobat Reader, etc.). If you use older versions, you're asking for trouble.
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