Canary-Based Protection Canary Defense Soltware Security Background Wikipedia:"the historic practice of using canaries in coal mines,since they would be affected by toxic gases earlier than ）Carary Delarse the miners,thus providing a biological warning system." DnG Pulmnishie Cinin Data Execution Prevention Dutindan Canary Stack Cookies ASLR A9月57 Software Security Background Control Flow Hijack Control Flow Hijack Defense 7 Canary Defense StackGuard StackGuard Weakness DiffGuard Polymorphic Canary Data Execution Prevention Definition DEP Scorecard Return-to-libc Attack ASLR ASLR Randomization ASLR Dept. of Computer Science, Nanjing University Canary-Based Protection Canary Defense