Date Added: Jul 2012
Field Programmable Gate Arrays (FPGAs) are used as a primary element for various applications like aero-space, automotive, military, etc., which require them to operate in different types of environments. Security of FPGAs is of concern as these devices are used in various critical applications. Extensive research is going on, considering security aspects of FPGAs as the primary interest. The security aspects of FPGAs must be considered so as to make sure that the FPGA system is well protected from all types of attacks. This paper proposes some threat models and defense models against possible attacks for FPGA based systems.