Password-Stealing Trojan Targets Skype
<<<... One of the more recent examples was a worm Symantec referred to as W32.Pykspa.D that in September was infecting Skype for Windows users with a virus spread via cleverly composed instant messages. Infected systems were sending chat messages to other Skype users asking them to click on a link that appeared to be a harmless JPEG file. If the link was clicked, the worm then transmitted the infection. Those who worry about network security tend to dislike Skype.
They cite the services ability to embed things into a protocol, its disruption of calling services and the fact that it uses supernodes that can have the same effect as a denial-of-service attack on a network as reasons to avoid its use in the enterprise. It is also said that Skypes encryption makes it impossible to figure out what malware its dragging onto an enterprise network. Other recent malware to hitch a ride on the Skype VOIP (voice-over-IP) service has included a Trojan named Warezov or Stration that used contact lists to spread to users friends, family and colleagues in late March. In April, another Skype worm made the rounds, sending a malware link to online friends in Skype users contact lists.
Before sending a message containing the malware link, the April Trojan set the infected users status to Do Not Disturb and, as a side effect, silenced calls or message alerts. Security researchers and Skype are recommending that users update their anti-virus detections to avoid infection. Check out eWEEK.coms Security Center for the latest security news, reviews and analysis. And for insights on security coverage around the Web, take a look at eWEEKs Security Watch blog.
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