Spam Botnet Tracked Down to Malicious PHP Script Found on 5,000 Hacked Sites

A malicious PHP script found on over 5,000 compromised websites fingered as source of large-scale spam campaign. The script is part of the infrastructure of a voracious spam botnet named “Brain Food”” The botnet is comprised of hacked sites running on WordPress

Source: 400 sites active in the past seven days alone