data is so easily duplicated and shared. That is why increasingly more organizations are looking to encrypt all their information. A word of warning to beginners to encryption. The PGP program, notwithstanding its user-friendly graphical interface, might take some used to here and there. On the USENIX Security Symposium in 1999, Alma Whitten & J. Tygar published a paper entitled "Why Johnny Can't encrypt" in which they point out a few of the usability problems associated..