Prasad Rao is a member of the Cloud and Security Labs (a part of HP Labs) with a focus on Security and Privacy. He develops graph algorithms, machine learning techniques and big data analytics techniques for security logs. Previously, he designed and implemented perimeter security analyzers for a systems of firewalls. He is the principal designer of the rule engine for the HP Privacy Advisor. Prior to HP Labs he worked in Telcordia Technologies on perimeter security enforcement and scheduling algorithms for dispatching technicians. As a PhD student, Prasad Rao built the core tabling engine of XSB prolog-- a free and open source Prolog and deductive database.