Overview
Skills from the Trail of Bits Application Security Testing Handbook (appsec.guide)
Detailed guide coming soon. We haven't written a full guide for this skill yet.
Related
Skill c-review
Comprehensive C/C++ security code review, with coverage verified against a parse of the source
Skill security-guidance
Security reminder hook that warns about potential security issues when editing files, including command injection, XSS, and unsafe code patterns
Skill claude-security
Deep vulnerability scanning of your own code, run entirely inside your Claude Code session at a chosen effort tier, with every finding challenged before it is reported and the verification tally computed in code. Turns surviving findings into targeted patches, each verified by a panel of agents, that you apply when you choose.
Skill code-modernization
Guided modernization for any legacy codebase: start with /modernize, get an assessment, an interactive map, the business rules mined from the code, and a plan you approve, then an upgrade, a rewrite or a rebuild with independent proof that the new code behaves like the old. Includes security hardening, a one-page report, specialist agents, and an optional live progress pane (early access).
Skill security-guidance
Security review for Claude-generated code. Pattern-based warnings on edits, LLM-powered diff review on Stop, and an agentic commit reviewer that catches injection, XSS, SSRF, hardcoded secrets, and 25+ other vulnerability classes.
Skill cybersecurity-skills
818 cybersecurity skills covering web security, pentesting, DFIR, threat intelligence, cloud security, malware analysis, and more. Mapped to 6 frameworks.