Skype tightening security by reducing ‘supernodes,’ says researcher
Author: Rod Sutherland
Skype may be facing a minor security controversy at the moment, but it appears Microsoft has already been making some behind-the-scenes changes to improve the service by altering Skype’s use of “supernodes.” In prior versions of Skype, machines that met the proper bandwidth and processor specs could be promoted to supernode status, where they would serve as peer-to-peer clients for distributing information about which Skype users were online at a given time. Security researcher Kostya Kortchinsky writes that he had discovered as many as 48,000 supernodes in his exploration of Skype’s architecture, but that in the last month that number has dropped to approximately 10,000. Furthermore, whereas supernodes had previously been machines in…
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