COMODO Internet Security 3.12.111745.560

Comodo Internet Security has both a firewall and an antivirus utility in its free package. While we can't speak for the firewall's effectiveness (we didn't test that feature), its antivirus component leaves much to be desired. In our rankings of free antivirus software, it landed at number six, last among the chart-makers.

After downloading the Internet Security package, you can choose to install the antivirus app, the firewall, a 30-day trial of Comodo's LivePCSupport, or any combination of the three. We installed only the antivirus portion. Considering its results in AV-Test.org tests, though, you probably won't want to install it on your PC.

Comodo fell flat in detecting malware. Only PC Tools Antivirus Free Edition (which purposely fails to detect what PC Tools considers spyware) and the not-ready-for-prime-time ClamWin Free Antivirus did worse than Comodo's 74.6 percent malware detection rate. Letting one out of four invaders go unnoticed just doesn't cut it. Comodo also neglected to catch some samples in the WildList test, a low-level baseline that uses known malware; most antivirus apps catch all of the WildList set, but Comodo missed a lot.