Internet - internet security Internet security and firewall

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 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: Kaspersky Internet Security 2010 is a full-featured security suite, and the 2009 version scored well on independent antivirus detection and removal tests. However, be prepared to pay a premium for what you're getting.

Specs: 3 users, Complete package, 10

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: AVG Internet Security 8.0 provides strong protection against malicious Web sites, but its full-system scans sometimes tax system resources and produce false positives.

Specs: Complete package, 1 GHz Intel Pentium, 2 GHz Intel Pentium, 8, 1 GHz Intel Pentium, 2 GHz Intel Pentium

Specs: 1 user, Complete package, Windows

Specs: 1 user, Complete package, Microsoft Windows 98, Microsoft Windows NT, Microsoft Windows XP, Microsoft Windows 2000, Microsoft Windows Millennium Edition, 15 MB, 150 MHz, 32 MB, CD-ROM, 150 MHz, Windows

Specs: 1 user, Complete package, 300 MHz Intel Pentium, 9.0, 300 MHz Intel Pentium

Specs: Complete package, 600 MHz Intel Pentium III or higher (Microsoft Windows XP), CD-ROM, 600 MHz Intel Pentium III or higher (Microsoft Windows XP)