Philip Zimmerman: a data security expert who wrote a famous cryptography program for encoding computer communications, at the IT Conference on Computer Freedom and Privacy in San Francisco, California (1995) Zimmermann created a powerful encryption program called "Pretty Good Privacy" (PGP) and made it available for free. Zimmermann is in trouble now because his "cryptography for the masses" slipped out of America via the Internet and has been downloaded by many foreigners. He was being investigated for violating a federal weapons-export-law. (Because it makes it hard for the Feds to eavesdrop on the Internet when people encrypt their messages). Zimmermann was photographed with looking through the encryption code that was printed out on acetate. Model Released. (1995).