Hacker and Security Researcher
Application Security is possibly the most overloaded word in InfoSec. Consider applications holistically, from the client, to the transport and APIs, to the backend services.
Application Security, Executables, Machine Instructions and Assembly, Compilers, Linkers, Loaders, OS Internals
Patching, Reverse Engineering, Buffers, Fuzzing, Crypto, Code Injection
Self-defending Applications, Integrity Verification, Authentication, Information Assurance, Obfuscation