TWITTER™ Trojan Horse Spam Email Warning: A wave of fake Twitter email invitations
sent in hopes of luring people to unzip a file to find out who invited them has been hitting unsuspecting victims. The message carries a mass-mailing worm. It looks around on infected computers and sends emails to addresses it finds. The message appears as if it came from a Twitter account, but unlike a legitimate Twitter message, there is no invitation URL in the body of the email. Instead, the user sees an attachment that appears as a .zip file containing an invitation card. When the zip file is opened, the virus spreads. ---- The header on the email invitation reads From: invitations@twitter.com, Subject: Your friend invited you to twitter! ----- The infected machines transmit a signal to a Web site, providing the opportunity for the bad guys to download misleading applications known as rogueware.
It alerts the computer owner that it has found malware on the machine, but if you pay me $49.95 to download the software I'll get rid of it for you, says Kevin Haley, director, Symantec Security Response, Cupertino, Calif.

Many trojan horse spam emails appear to warn the user about a malicious threat and implies that the file attachment is a security patch that will protect the user from this threat. However, the attachment itself is a malicious threat. You can read more about it here. Stromtrojan.com You can learn more about Internet Security in easy to understand language and participate in forums at AntiVirus Advice .com