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Security & Hardening

Unversioned·Public·Certified·coding·scanned 2026-07-04

Install

Claude Code: add the marketplace once, then install.

/plugin marketplace add simplycubed/skills
/plugin install security-hardening@simplycubed

Any agent (folder)

Download the folder at the source, then drop it into your agent's skills directory.

Folder: security-hardening/

AgentDirectory
Vendor-neutral (Codex, Gemini CLI, …).agents/skills/
Claude Code~/.claude/skills/
Gemini CLI~/.gemini/skills/

Summary

Hardens code against vulnerabilities. Use when handling user input, authentication, data storage, or external integrations, or building any feature that accepts untrusted data, manages sessions, or calls third-party services.

Details

Passed automated static scanning. A point-in-time review, not a guarantee it is safe to run.

Scanned 2026-07-04: certify builtin · gitleaks 8.18.4 · osv-scanner 2.4.0 · semgrep n/a (no code)

✓ All checks clean

Flagged for review (non-blocking):

  • SKILL.md: reference to secret/credential files
  • SKILL.md: reference to code-execution APIs

Credits

Written by Addy Osmani

Keywords

#security #hardening #code-review #appsec

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