Security And Hardening is a production-ready Claude Code skill (quality score 70/100) in the security-misc sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/security-and-hardening/ and loads when your prompt matches the skill's trigger.
When to invoke it: Use when handling user input, authentication, data storage, or external integrations. Use when building any feature that accepts untrusted data, manages user sessions, or interacts with third-party services.
The Security And Hardening skill is built for security engineers, penetration testers, DevSecOps practitioners, and development teams hardening codebases and infrastructure. It is part of the open ClaudSkills registry, a community-curated catalog of 15,000+ capabilities you can install for Claude Code — the Claude CLI agent.
mkdir -p ~/.claude/skills/security-and-hardening curl -L https://claudskills.com/skills/security-and-hardening/SKILL.md \ -o ~/.claude/skills/security-and-hardening/SKILL.md
Or just download SKILL.md directly and drop it into ~/.claude/skills/security-and-hardening/. Claude Code auto-discovers it on next session.
Skills live at ~/.claude/skills/security-and-hardening/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\security-and-hardening\SKILL.md on Windows. See the full install guide for step-by-step instructions.
The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.
Browse all Security skills in the ClaudSkills registry, or explore these top-rated picks from the same category:
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