Gartner defines the security information and event management (SIEM) market by “the customer's need to analyze security event data in real time for internal and external threat management, and to collect, store, analyze and report on log data for incident response, forensics and regulatory compliance.” Learn more by downloading the 2014 SIEM Magic Quadrant and explore why HP ArcSight was named a leader again – for the eleventh year in a row! For better security, think like a bad guy.