Popular sites carrying JavaScript attacks

Malicious JavaScript has been planted on numerous legitimate Web sites over the weekend, attempting to take advantage of known flaws in Windows to download and activate keylogger and backdoor trojans on machines which browse the sites, Virus Bulletin reports.

An initial report was released on Friday, warning of an attack found embedded in the site of the Dolphin Stadium, host of the Super Bowl held on Sunday and so subject to heavy traffic in the lead-up to the popular game.

Since then a number of other domains have been found to be playing host to the same or similar attacks. A SANS Internet Storm Center diary entry records a list of domains found to be hijacked and linked to the same attack, many of which appear to be related to medical care.

While many have been cleaned and some of the hosting domains taken down, it is thought the attack could still be active in places.