3 Arora, Divya Raghunathan, Anand Ravi, Srivaths Jha, Niraj 2005 Enhancing Security through Hardware-assisted Run-time Validation of Program Data Properties Proceedings of ACM/IEEE International Conference on Hardware Software Co-design and System Synthesis (CODES+ISSS 2005) New York, USA 190-195 Sept. 2005 Data tagging, run-time checks, secure architectures http://palms.ee.princeton.edu/PALMSopen/arora05enhancing.pdf