A growing number of innocent web sites with a normal reputation become compromised with the web master having no knowledge of it. The compromiser can install code on the web site which attempts to covertly install malicious code on the unprotected computers of visitors to the site. This installation attempt is known as a drive by attack.
Anti-Virus (AV) software, along with its Firewall side-kick, has been the standard weapon against Internet borne threats for the past two decades. But in a changing threat landscape AV is fast beginning to look past its sell-by date