.."Old virus detected - contact your hacker for an update." It seems that malware authors have taken this joke seriously, and are offering subscriptions to website operators that make use of their software. Malware tends to evolve fairly rapidly to get around the cleaner software, which means that sites that deliberately infect web browsers have to keep up to date to keep as many systems as possible infected. Prices tend to start around $66us and climb from there, depending upon how many systems a particular website is able to infect.

It has become apparent that it is possible to not only …