Sophos stops new version of Koobface social networking worm

Our friends at Trend Micro are in the news today talking about a new variant of the Koobface worm which is capable of spreading via Facebook, MySpace, Bebo and other social networking sites.

It’s the typical fare – a message apparently sent by a friend of yours on the social networking site invites you to check out a video. However, when you click on the link you are taken to a website posing as YouTube that encourages you to download an updated version of the Adobe Flash Player plugin.

Of course, that downloaded file is in fact a Trojan horse. Sophos proactively detects it as W32/Koobfa-Gen without requiring an update.

What’s perhaps more interesting to me is that in…

Read more in my article on the Naked Security website.

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Graham Cluley is a veteran of the cybersecurity industry, having worked for a number of security companies since the early 1990s when he wrote the first ever version of Dr Solomon's Anti-Virus Toolkit for Windows. Now an independent analyst, he regularly makes media appearances and is an international public speaker on the topic of cybersecurity, hackers, and online privacy. Follow him on Twitter, Mastodon, Bluesky, or drop him an email.