Over a hundred forum websites have been compromised and injected with code that redirects users to sites hosting the Fiesta exploit kit, Cyphort researchers have found.
These are not highly popular forums, but gather a respectable number of users who like to discuss DIY projects, animals, wrestling, scuba diving, news regarding PS3, and so on. They are powered by either vBulletin or by IP Board online forum software, new vulnerabilities for which are often found and publicly disclosed.
The researchers have found 122 compromised forums in total.