Can you believe it? After using YouTube, PDFs, and pictures, spammers have now turned themselves to audio files in order to send you their crap and bypass your spam filters.

Spammers involved in pump-and-dump scams touting penny stocks now are using MP3 music files to lure investors, a switch security experts say is the latest tactic designed to sneak the messages past spam filters.

According to e-mail security provider MessageLabs, the spam run began late on Oct. 17, with roughly 10,000 messages blasted out per hour. The e-mails include semi-random subject lines that matched the title of the attached MP3 file, which plays a short 20-60 second message touting microcap shares of a company called Exit Only Inc.

So the next time an email that contains an attachement named “getbiggernow.mp3” lands in your inbox, please don’t open it, unless you’re really looking to… Nah, forget it! :)

Stock Spammers Pump It Up With MP3 Files