Natalia Stakhanova Oleg Stakhanov Ali A. Ghorbani A Behavioral Model of Ideologically-motivated “Snowball” Attacks. 88-95 2008 ARES http://doi.ieeecomputersociety.org/10.1109/ARES.2008.57 conf/IEEEares/2008 db/conf/IEEEares/ares2008.html#StakhanovaSG08