Saturday, August 18, 2007

Skype protocol has been cracked

The proprietary protocol used by Skype for its voip services has been cracked by Chinese programmers, voip startup Vozin Communications co-founder Charlie Paglee reports on

Paglee says on July 12, 2006 - more than a year ago(!) - he received a Skype call from a friend at a company in China telling him he was not using Skype to make the call (screenshot above) claiming "his company has successfully reverse engineered the Skype protocol". The friend was after testing the new software with another end user in the United States to see how it worked between physically distant IP addresses.

According to Paglee the Chinees programmers reverse engineered a protocol that was not protected by patent. According to Chinese company CEO, their software will not support Skype’s Super Node technology... digg that :)


  1. I alsways found the indisclosed nature of the skype protocol and the software that it is using a bit fish to say the least. I hope this serves the skype company as a warning not to rely on security by obscurity.

  2. Thanks for your interesting comment dwave. Very nicely phrased: "not to rely on security by obscurity". I like that.

    P.S. I once had a roommate from Maagn Michael when I was living in Tel Aviv mi 90's... :)

  3. I went to the ulpan in Maagan Michael and now the work here starts to suck me in. I am not a Kibbutznik but I'm there frequently and I am building some their websites and database applications.

  4. way to go dwave! everyone need good websites and database applications. thanks for visiting me and stay in touch!


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