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Thursday, September 03, 2009 5:03 PM/EST

Skype Security and Spam Updates

With news of eBay's Skype sale out of the way, Skype employees are apparently free to start disseminating information once again. As such, Skype today in blog posts reacted to a pair of security concerns that I've written about recently.

One post outlined a new hotfix for Skype 4.1 that, among other things, takes the first baby step toward helping users deal with incoming invite spam. The hotfix purports to make unclickable any links presented within an invite request. While I'd rather see Skype work to change the way invite requests are currently commingled with real contacts within a user's contact list, or actually block the incoming spam, it's a start.

I'm actually waiting to apply the hotfix until I get my next spam invite so I can see the differences in action. I'll add a screen or video as soon as I have something to show.

skypespamlink.jpg

In the second note, Skype finally responded to the recent news circulating about the Trojan PeskySpy, which aims to steal the audio of a Skype call and send the conversation to parts unknown. In the post, the author links to the Symantec post about the threat, rather than the less detailed post about the Trojan by Sophos that first captured my attention.

The post clarifies that the Trojan hooks into Windows APIs and uses these hooks to collect Skype output rather than directly attacking Skype code. Instead, the Trojan sits in between the audio hardware and Skype, intercepting the data payload after Skype decrypts it (or before Skype encrypts a transmission) on a Windows-based host.

As a side note, that second Skype post mentioned represents the first addition to the Skype Security blog since April.

Welcome back, fellas.

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Comments (1)

So really these "Skype" problems are Microsoft Windows problems. Infected machines send Skype spam, the same way they send email and IM spam. The remote owners of Windows are able to listen in to Skype conversations the same way they can keylog and listen in to anything else you do. Nothing is safe on top of a platform that has as many design flaws as Windows does.

Wake me up when the gnu/linux client has problems other than spam from Windows machines. Skype is not free software, so I don't expect it to be as good as most of my software and I treat it like an anthrax laced cowhide, but it is unfair to scare users because Windows is still a mess.

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