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10 quick fixes for the worst security nightmares

August 12, 2008 12:00 PM ET

If using VirusTotal starts to become a habit (not a bad idea) and you want to make sending files for scanning to VirusTotal really easy, download the free VirusTotal Uploader. Once you've installed the utility, just right-click a file, and you'll see an option (under Send To) to upload it to the VirusTotal site.

Fix 5: Get the jump on fast-moving malware

Traditional, signature-based antivirus software is getting snowed under by a blizzard of malware. Attackers try to evade detection by churning out more variants than security labs can analyze. So besides signatures, any antivirus program worth its salt today uses proactive detection that doesn't require a full signature to spot sneaky malware.

One promising approach uses behavioral analysis to identify malicious software based solely on how it acts on your PC. But your antivirus software by itself may not be enough. ThreatFire, a popular free download from PC Tools, adds such a layer of behavior-based protection. In recent tests, it correctly identified 90% of malware based on its behavior alone.

PC World's ThreatFire review provides a thorough analysis of the program and a quick download link (as well as a warning about installing too many security programs on one PC). And for more on behavioral analysis and proactive virus detection, see "When a Signature Isn't Enough."

Note: If you use the AVG Free antivirus program, hold off on trying ThreatFire until PC Tools releases a new version. The current 3.5 version conflicts with AVG, but PC Tools says it's working on a fix.

Fix 6: Rescue your in-box from spam

Spam filters are getting better, but some junk still makes it through even the best of them. Instead of resigning yourself to hitting delete for all those hot-stock and Viagra come-ons, try disposable e-mail addresses.

Such an address is something you create every time you encounter an online shopping site, forum or other service that requires you to enter an e-mail address. If that address gets flooded with spam, you can terminate it. That's a better system than the alternative, creating a free Web mail account that you use only for purchases and Web signups. With a single separate account, you have to throw the baby out with the bathwater and cancel the whole account if it gets too much spam.

Yahoo Web mail users can opt for the $20-a-year Plus service, which includes the AddressGuard disposable e-mail service (among other benefits). With it, you can click a bookmark to create a new, disposable address for any given site in about 10 seconds.

Gmail users can simply append "+ whatever" to their regular e-mail address before handing it out, but if that address starts to receive spam you can't simply turn it off. You'll have to create a filter in Gmail to block all mail to that address.


Reprinted with permission from

For more PC news, visit PCWorld.com.
Story copyright 2009 PC World Communications. All rights reserved.

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