A Coprocessor Architecture to Defend against Security Attacks

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We proposed a novel microprocessor architecture with a defense mechanism against stack smashing attacks, which corrupt the procedure return address and force the target computer to execute a malicious code. Our processor consists of two components ; the main processor, which executes the operating system and user applications, and the auxiliary processor, which follows the program execution in the main processor and detects the return address corruption. Consequently, our architecture achieves both detection accuracy and performance.