See also "Why Johnny Can't Encrypt: A Usability Study of PGP 5.0", Whitten et al http://www.gaudior.net/alma/johnny.pdf http://www.gaudior.net/alma/johnny.pdf

See also "Why Johnny Can't Encrypt: A Usability Study of PGP 5.0", Whitten et al http://www.gaudior.net/alma/johnny.pdf http://www.gaudior.net/alma/johnny.pdf and its followup, "Why Johnny Still Can't Encrypt: Evaluating the Usability of Email Encryption Software", Sheng et al http://cups.cs.cmu.edu/soups/2006/posters/sheng-poster_abstract.pdf http://cups.cs.cmu.edu/soups/2006/posters/sheng-poster_abstr...