I don't know if Skype has a back door, but I'll say this: If I worked for the NSA, I would write Skype. And it would have a back door.
Because really, what could possibly be better backdoorware than closed-source code with anti-debugging mechanisms, which millions of people have installed and running continuously, and which has a completely plausible excuse for sending and receiving large volumes of encrypted traffic?
As I see it, the only question we should be asking about Skype's security is this: Should we just assume that government(s) can listen in on Skype calls -- or should we assume that running Skype gives governments access to everything on our systems?
Because really, what could possibly be better backdoorware than closed-source code with anti-debugging mechanisms, which millions of people have installed and running continuously, and which has a completely plausible excuse for sending and receiving large volumes of encrypted traffic?
As I see it, the only question we should be asking about Skype's security is this: Should we just assume that government(s) can listen in on Skype calls -- or should we assume that running Skype gives governments access to everything on our systems?