Philip Zimmermann introduced Zfone encrypted VoIP

While government anti-security pundits bicker back and forth about encrypting VoIP
traffic, it seems like it's time to take matters into our own hands. Our man Philip Zimmerman (who you may know as being the creator of PGP) announced Zfone, a seamless PKI-free, Diffie-Hellman hashing, man-in-the-middle-detecting SIP
VoIP client. Don't know what that means? Don't worry, all you need to know is if you're worried about your VoIP traffic,
you need worry no more; not to be confused with his mid-90s encrypted VoIP product, PGPfone, today's encrypted VoIP
brings Internet anti-wiretapping up to date with the latest in SIP and RTP protocols, as well as OS X (and Linux)
support (sorry Windows peeps, you're out of luck for now).