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Research Areas: Computer Systems, Complexity, Biomolecular Networks RAHUL SIMHA Department of Computer Science The George Washington University Washington, DC 20052 [email protected] 202-994-7181 Motivation: Computer Security What hackers do: Code understanding: to duplicate, steal ideas, prepare attacks Code tampering: to circumvent checks, cause attacks Others: data tampering, authorization attacks, bufferoverflow I can understand the code Now I can modify the code GW 2006 2 Software Security/Protection Computer security research Crypto, protocols, policy, intrusion detection Related areas: data mining, signal processing, networking … Our approach: How can compilers be used to protect software? Exploit reconfigurable (FPGA) hardware Tools to manage security/performance tradeoff. Collaboration with: Bhagi Narahari (CS) Source code Secure compiler Secure executable GW 2006 3 Biomolecular Networks Hypoxia network 23 molecules (e.g., HIF, PH, VHL) Unusual effect: sharp response to oxygen Our goal: explain using mathematical (ODE) models Boolean network models: GW 2006 Gene-regulation network Explore fundamental properties Collaboration with: Frank Turano (Bio), Chen Zeng (Physics) 4 Other research interests Complex Systems Phase transitions in complex systems How and why does complexity arise? Embedded Systems Sensor networks, databases Energy consumption (low power applications) Smart-home medical applications Patient monitoring Robotics for in-home care GW 2006 5