Virus writers are targeting Skype users with a new Trojan that poses as the latest version of the popular VoIP software.
Net security firm MessageLabs has detected and blocked more than 800 copies of a new variant of the MyTob (AKA Fanbot) Trojan, which is being distributed by email.
The malware arrives in an attachment in messages posing as the latest (v1.4) release of Skype. Legitimate downloads of the software only came out last week, so the attack is timely. If users open the infected attachment on a vulnerable Windows machine, they will find their PCs transformed into zombie clients (theoretically at least) under the control of computer hackers.
The Moral of the story - Only obtain Program Updates from the official Skype website and ignore/delete these emails.

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Willum