Spammers are the source of a flood of messages that appear to originate from various social networks, including Facebook and Myspace, as well as popular sites like iTunes.
The spam messages usually just contain a link, and possibly a few words. Their subject matter falls into three general categories common to most contemporary spam: Pill vendors, Russian bride “vendors,” and drive-by download sites hosting Zbot password-stealer installers.
It’s not unusual for spammers to forge the return addresses, but the sheer volume of spam that has been forged so it appears to originate from MySpace, Facebook, or iTunes is notable.