zero-day

· Hunt for novel vulnerabilities in source code, binaries, or live systems - reverse engineering, patch diffing, fuzzing, attack surface mapping, PoC development, and responsible disclosure. Triggers: 'zero-day', '0-day', 'vulnerability research', 'variant analysis', 'patch diffing', 'fuzz', 'exploit dev', 'CVE', 'PoC', 'reverse engineering'. Not for SAST scanning (use security-audit), post-exploitation (use lockpick), or code correctness (use code-review).