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Harden by Default

Agent skill
1 skill

Use when recommending controls or evaluating whether a system is secure by construction — apply the classic security principles (least privilege, fail-safe defaults, complete mediation, economy of mechanism, no security-through-obscurity).

Install with
Claude CodeCodexCursorGitHub CopilotGemini CLI

Supported by the Atlas install prompt. Skill-specific requirements vary.

Skill stats

Skills1CategorySecurityStars0

About this skill

Use when recommending controls or evaluating whether a system is secure by construction — apply the classic security principles (least privilege, fail-safe defaults, complete mediation, economy of mechanism, no security-through-obscurity).

Quick start

  1. Copy the install prompt. Use the green button above this README.
  2. Send it to your agent. Paste it into your coding agent’s chat and send.
  3. Review the setup. Your agent checks the skill’s instructions, requirements, and installation scope.
Review, license & listing details
Review the source before using this skill

This is an imported listing. We haven’t certified its safety, license, or compatibility. Skills may include executable scripts.

Automated security scan: Partial

Only SKILL.md was scanned. Supporting files and scripts were not checked. No safety grade has been assigned.

0 potential findings · Scanned 11/4/2026 · Scanner 0.2.1

Content SHA-256: 94667f358f8859daa53874244da80ff6bced80f84a3f2ee9a88a0855f2b82b0a

About scan coverage and limitations

About this listing

Category
Security
Reported license
MIT
Listing language (estimated)
English
Review status
Not individually reviewed
Agent compatibility
Atlas installation supports Claude Code, Codex, and Cursor. Skill-specific dependencies and features are checked during setup.
Harden by Default | Agent Skills Atlas