The down of Skype
As you can see in this and this graphs in the past days there is an outage of Skype.
The facts are:
- There was e big Skype outage
- A Sype DoS exploit is published
- Skype released a new upstream version
Skype said that the outage is not caused by a DoS attack, but like a big company do, said that was a software issue.
I think that the exploit published is a fake, because for me don’t work, and other have documented this here.
Another glance through Desclaux and Kortchinsky suggests, in addition to traffic from clients to login servers, Skype
generates a lot of traffic between the login servers and supernodes (see slide 16 for example). This makes the login servers a doubly critical piece of Skype infrastructure. Of course, if they merely introduced a bug in their login servers, it shouldn’t take 12-24 hours to do a roll back.
So this outage can be caused by a Sype network or Skype server issue.
Another good point is that this week a Snort Skype preprocessor was published.
But no one out of Skype known the truth.
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