G. Schryen, “The Impact that Placing Email Addresses on the Internet has on the Receipt of Spamf? An Empirical Analysis,” Computers &; Security, vol. 2, no. 5, pp. 361–372, 2007.

G. Schryen, “An e-mail honeypot addressing spammers’ behavior in collecting and applying addresses,” in Proceedings of the 6th IEEE Information Assurance Workshop, 2005, pp. 37–41.