There’s a new variant of W32.Koobface, a worm that was discovered in August last year, according to Symantec Security Response. It’s called called W32.Koobface.C.

It’s a good ol’ Twitter hijacker that is activated when a user inadvertently installs an “AntiVirus2008” program.

Once hijacked, an infected Twitter account posts tweets in an attempt to infect more people. It’s usually a link to the malicious software with titles such as “my home video :)”, “watch my new private video! LOL :)” and “michaeljackson’ testament on youtube”. [Read more…]