Sudhir Aggarwal Mike Burmester Peter Henry Leo Kermes Judie Mulholland Anti-Cyberstalking: The Predator and Prey Alert (PAPA) System. 195-205 2005 conf/sadfe/2005 SADFE http://doi.ieeecomputersociety.org/10.1109/SADFE.2005.2 db/conf/sadfe/sadfe2005.html#AggarwalBHKM05