How easy is it for the average internet user to make a phone call secure enough to frustrate the NSA's extrajudicial surveillance program? Wired News took Phil Zimmermann's newest encryption software, Zfone, for a test drive and found it's actually quite easy, even if the program is still in beta. Zimmermann, the man who released the PGP e-mail encryption program to the world in 1991 -- only to face an abortive criminal prosecution from the government -- has been trying for 10 years to give the world easy-to-use software to cloak internet phone calls.

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