The most important component of KIS 2009 is undoubtedly the anti-virus scanner, which is the backbone of protection for any computer. Some of the most comprehensive AV testing is done by a company called AV-Comparatives, which test a variety of scanners against a huge database of viral infections. This is one of the most effective ways of measuring the performance of AV scanners, and provides a much more representative result than personal testing. In the latest test of on-demand AV scanners (Feb 09), Kaspersky is tested alongside 16 other products in their default modes. A 97.1 overall detection rate was achieved, which is roughly a mid-table result however the number of false positives was significantly lower than many other scanners.