Malicious hackers use Facebook Wall for malware attack

active users worldwide, didn't immediately reply to a request for comment.

The prompt to download an upgraded Flash player is apparently becoming popular with malicious hackers. This week, Adobe posted its own alert warning people not to fall for this trick. Apparently, the bogus Flash message is part of other malware attacks that use microblogging site Twitter and other social sites.

Last week, security company Kaspersky Lab warned of new worms targeting MySpace and Facebook users via automatically generated comments and messages to those on their lists of friends.