Preventing E-mail Spam: The Conceptualization and the Analysis of an Infrastructure Framework
G. Schryen, Preventing E-Mail Spam: The Conceptualization and the Analysis of an Infrastructure Framework, 2007.

Do anti-spam measures effectively cover the e-mail communication network? A formal approach
G. Schryen, The Journal of Information Systems Security (AIS Special Interest Group in Security) 3 (2007) 66–90.

The Impact that Placing Email Addresses on the Internet has on the Receipt of Spam ? An Empirical Analysis
G. Schryen, Computers &; Security 2 (2007) 361–372.

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

Effektivität von Lösungsansätzen zur Bekämpfung von Spam
G. Schryen, Wirtschaftsinformatik 46 (2004) 281–288.

Fighting Spam: Motivating an Account-based Approach
G. Schryen, in: P. Isaias (Ed.), Proceedings of the IADIS International Conference WWW/Internet 2004. Vol. 2, IADIS Press, Madrid, 2004, pp. 937–940.