Fake Twitter invites spreading email worm
Monday, June 22, 2009
Spam emails that appear to be invitations to join the micro-blogging site Twitter have been spreading a mass email worm that can steal email addresses from a user's PC. Symantec reported last week that the fake invites can be spotted because legitimate invites contain a URL link in the body.
Instead, the user will see an attachment that appears as a .zip file that purportedly contains an invitation card. The file is actually a malicious attachment known as the Ackantta worm, which gathers email addresses from infected computers and spreads by copying itself to removable drives and shared folders, Symantec said.
"As Twitter continues to gain popularity among social networking users, people are regularly receiving invitations and email updates from fellow users," Symantec researcher Sammy Chu said in a blog last week. "We expect that spammers will continue to use Twitter and other popular social networks as bait in their attacks."
Symantec had spotted an e-card virus attack in February that was used to spread the same Ackantta worm.
Twitter's booming popularity has also made it a growing target of phishing attacks and other types of spam.
Earlier this month, researchers spotted messages on Twitter that directed users to go to a YouTube spoof site to see a "best video." Users who visited the site could have had their PCs infected through vulnerable versions of Adobe Reader.

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