ACM Special Interest Group on Security, Audit and Control 2011-2012 : ACM SIGSAC 2011-2012 publications of ACM SIGSAC CCS'11 proceedings, CCS'11 co-located workshops, WiSec'11 proceedings, ASIACCS'12 proceedings, CODASPY'12 proceedings, SACMAT proceedings (ACM - Association for Computing Machinery, 2012)