Internet & communications Software

The Bottom Line: We're big fans of PC Tools Internet Security's ThreatFire component, and the overall toolset that PC Tools provides is robust, but the suite could be both faster and easier to use.

Specs: 1 user, Complete package

The Bottom Line: ZoneAlarm Extreme Security 2010 isn't necessarily the best suite around, but it's definitely effective and should appeal to those who like making granular adjustments to their protection.

Specs: Complete package, 2 GHz or higher (Microsoft Windows 7, Microsoft Windows Vista Business, Microsoft Windows Vista Home Premium, Microsoft Windows Vista Ultimate), 1 GHz or higher (Microsoft Windows XP SP2, Microsoft Windows XP SP3, Microsoft Windows XP Home Edition, Microsoft Windows Professional), 2 GHz or higher (Microsoft Windows 7, Microsoft Windows Vista Business, Microsoft Windows Vista Home Premium, Microsoft Windows Vista Ultimate), 1 GHz or higher (Microsoft Windows XP SP2, Microsoft Windows XP SP3, Microsoft Windows XP Home Edition, Microsoft Windows Professional)

The Bottom Line: Norton AntiVirus 2010 builds on the immense progress made in last year's version, maintaining a low system profile while strengthening its security framework. It's not perfect, but even Symantec's detractors should check it out.

Specs: 1 user, Complete package, 300 MHz or higher, CD-ROM, DVD drive, 300 MHz or higher

The Bottom Line: Norton Internet Security 2010 builds on the immense progress it made in last year's version, maintaining a low system profile while strengthening its security framework. It's not perfect, but even Symantec's detractors should check it out.

Specs: 1 user, Complete package, 300 MHz or higher, CD-ROM, DVD drive, 300 MHz or higher

The Bottom Line: Trend Micro Internet Security Pro's broad feature set combined with its look and feel make it a serious contender, but questionable efficacy and middling performance mean it's a program we're not recommending for this year.

Specs: Complete package, Intel Pentium, 3.0, Intel Pentium

The Bottom Line: Going by older detection and removal numbers, Trend Micro AntiVirus plus AntiSpyware offers competent if basic security protection. However, so do many free competitors. This year, we recommend giving Trend Micro AntiVirus plus AntiSpyware 2010 a pass.

Specs: Complete package, Intel Pentium, Intel Pentium

The Bottom Line: AntiVir Personal 8 provides more than adequate malicious-software protection, but for the price, we expected more features and polish.

Specs: Complete package, 133 MHz Intel Pentium, 133 MHz Intel Pentium

The Bottom Line: ZoneAlarm Internet Security 2009 provides top-notch security protection that is light on system resources, allowing you to work unencumbered.

Specs: Complete package, 1 GHz Intel Pentium III, 1 GHz Intel Pentium III

The Bottom Line: Kaspersky Anti-Virus 2009 provides adequate protection, but the program itself could use some work in telling the user what's going on.

Specs: 1 user, Complete package, 800 MHz Intel Pentium (Microsoft Windows XP, Microsoft Windows Vista), 800 MHz Intel Pentium (Microsoft Windows XP, Microsoft Windows Vista)