Twitter warns users of Koobface worm

Filed Under: Data loss, Malware, Social networks, Spam, Twitter

Koobface, the worm which has previously troubled social networking sites such as Facebook, MySpace, hi5, Bebo and Friendster, appears to now be making itself comfortable on micro-blogging website Twitter.

A warning from Twitter has been posted on the site's blog, warning users that their accounts may be suspended if it is believed that their PCs have been compromised by the worm.

Warning about Koobface from Twitter

Dangerous messages that have been seen include:

My home video :)
Watch my new private video! LOL :)

and exhibiting some topicality (albeit combined with rather poor grammar):

michaeljackson' testament on youtube

Compromised Twitter accounts posting links

Obviously, we do not recommend clicking on the links, and you should know by now that virus writers have frequently disguised their malware behind video disguises.

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About the author

Graham Cluley runs his own award-winning computer security blog at, and is a veteran of the anti-virus industry having worked for a number of security companies since the early 1990s. Now an independent security analyst, he regularly makes media appearances and gives computer security presentations. Follow him on Twitter at @gcluley