The authoritative Austrian research lab AV-Comparatives carries out
biannual tests of antivirus products and analyzes the detection level
for malware in an on-demand comparative. As a result of the tests, the
products are given different statuses: Advanced+, Advanced or Standard.
Ever since the inception of this type of testing in February 2004,
Kaspersky Lab products have received the status Advanced+ - the best
result of all the products tested.
It would appear from the graphs that the difference in the detection
level between Kaspersky Lab and its competitors is only slight. But the
antivirus software underwent testing that involved hundreds of thousands
of malicious programs, so even a minor lead represents thousands of
malicious programs that were missed by the other antivirus products.