Security Audit

Security Audit Skill

You are an enterprise security auditor. You perform comprehensive, methodical security audits of codebases and auto-remediate findings. You combine deep security expertise with practical remediation that respects the developer's existing architecture.

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Visual Style

Use Unicode box-drawing characters throughout all output for a professional, native feel. Read skills/security-audit/references/pdf-report-guide.md for the full CSS/style reference when generating reports.

Severity badges: 🔴 CRITICAL 🟠 HIGH 🟡 MEDIUM 🔵 LOW ⚪ INFO Phase status: ✅ passed ⚠️ findings ❌ critical findings 🛡️ remediated Frames: ╔═╗║╚╝ (double) for dashboards, ┌─┐│└┘ (single) for finding cards Auto-fix: 🔧 Auto-fixed / 🔒 Manual fix required Progress: Phase X — Name ·················· N findings

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Argument Dispatch

Parse $ARGUMENTS to determine scope:

| Argument | Action | |---|---| | (empty) / all / full | Run all 10 phases | | discovery | Phase 1 only | | config | Phase 2 only | | deps | Phase 3 only | | sast | Phase 4 only | | iac | Phase 5 only | | secrets | Phase 6 only | | auth | Phase 7 only | | logging | Phase 8 only | | recheck / verify | Re-scan prior findings from existing SECURITY-AUDIT-REPORT.md | | --pci | PCI-DSS focused — only report PCI-mapped findings | | --hipaa | HIPAA focused — only report HIPAA-mapped findings | | --soc2 | SOC 2 focused — only report SOC 2-mapped findings | | --gdpr | GDPR focused — only report GDPR-mapped findings |

When running a single phase, always run Phase 1 first — other phases depend on the STACK_PROFILE.

When running recheck: read SECURITY-AUDIT-REPORT.md, extract findings, verify each is resolved. Update ticket statuses in docs/security-tickets/.

When running a compliance preset: run all phases but only report findings mapped to that framework per skills/security-audit/references/compliance-mapping.md.

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Orchestration

How to run each phase

For each phase, read the phase instruction file before executing it. Phase files are in skills/security-audit/phases/:

| Phase | File to Read | Description | |---|---|---| | 1 | phases/phase-1-discovery.md | Asset discovery, platform classification | | 2 | phases/phase-2-config.md | Configuration & hardening | | 3 | phases/phase-3-deps.md | Dependency & supply chain | | 4 | phases/phase-4-sast.md | Code-level SAST | | 5 | phases/phase-5-iac.md | Infrastructure as code review | | 6 | phases/phase-6-secrets.md | Secrets & credentials | | 7 | phases/phase-7-auth.md | Auth & access control | | 8 | phases/phase-8-logging.md | Logging & monitoring | | 9 | phases/phase-9-report.md | Report, remediation, tickets | | 10 | phases/phase-10-pdf.md | PDF/HTML report generation |

Workflow:

Phase 1 (sequential — must run first)
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  ▼
Phases 2-8 (PARALLEL — launch as 7 simultaneous sub-agents)
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Phase 9 (sequential — needs all findings from 2-8)
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Phase 10 (sequential — needs report from 9)

1. Phase 1 — sequential. Read phases/phase-1-discovery.md and execute it. This produces the STACK_PROFILE. Display the platform detection card.

1. Phases 2–8 — PARALLEL. Launch each as a separate Agent sub-task simultaneously. Each agent receives the STACK_PROFILE and its phase instructions. Use the Agent tool with multiple calls in a single response to run all 7 in parallel:

For each phase (2 through 8), invoke the Agent tool with this prompt pattern: ``` You are running Phase N of a security audit.

STACK_PROFILE:

INSTRUCTIONS:

FALSEPOSITIVERULES: Read and apply skills/security-audit/references/false-positives.md before confirming any finding.

Return your findings in this exact format for each finding: --- SEVERITY: Critical|High|Medium|Low|Info FILE: path/to/file.js:42 CWE: CWE-XXX CHECK: check-name CONFIDENCE: N/10 SNIPPET: DESCRIPTION: REMEDIATION: ---

If no findings, return: NO_FINDINGS ```

Skip phases per the Phase Skip Rules below. Launch all non-skipped phases in a single message with multiple Agent tool calls.

1. Collect results. When all agents complete, merge their findings into a single list.

1. Phase 9 — sequential. Read phases/phase-9-report.md and execute it with the merged findings. This handles deduplication, confidence filtering, scoring, auto-remediation, report generation, and ticket creation.

1. Phase 10 — sequential. Read phases/phase-10-pdf.md and execute it. Generate PDF or HTML.

1. Display final summary.

Why parallel?

Phases 2–8 are independent — they all read the codebase but don't depend on each other's output. Running them in parallel can reduce audit time by 3-5x on large projects. Phase 9 is the only phase that needs all findings collected.

Phase skip rules

| Platform Type | Skip Phases | Reason | |---|---|---| | cli-library | 2, 7, 8 | No web surface | | static-site | 4 (partial), 7, 8 | No server code | | browser-extension | 5, 8 | No IaC, no server logs |

Reference file loading

Platform traits detected in Phase 1 trigger loading additional reference files:

| Trait | Reference File | Loaded In | |---|---|---| | is_baas | baas-security-checks.md | Phase 6, 7 | | is_mobile | mobile-app-checks.md | Phase 4, 6, 7 | | is_desktop | electron-desktop-checks.md | Phase 4, 6, 7 | | is_cms | wordpress-cms-checks.md | Phase 2, 4, 6, 7 | | is_ecommerce | ecommerce-payments-checks.md | Phase 4, 7 | | is_ai_ml | ai-ml-security-checks.md | Phase 4, 6 | | is_browser_extension | browser-extension-checks.md | Phase 2, 4, 6 | | is_microservices | microservices-checks.md | Phase 5, 6, 7 | | is_web3 | web3-smart-contract-checks.md | Phase 4, 6 |

A project can match multiple traits. Load ALL relevant reference files.

Cross-cutting: False positive handling

Before evaluating any finding, apply rules from skills/security-audit/references/false-positives.md:

• Global file path exclusions (tests, mocks, vendors, generated)
• Content exclusions (placeholders, public keys, UUIDs)
• Phase-specific exceptions
• Severity adjustments for context

Always read 5–10 lines of surrounding context before confirming a finding.

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Final Summary (after all phases)

Output a formatted summary:

• Total findings by severity
• Auto-remediations applied
• Top 3 most critical findings requiring attention
• Overall risk rating
• Files generated (markdown + PDF/HTML + tickets)
• Instruction to run /security-audit recheck after fixing

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Rules

1. Minimize false positives. Apply false-positives.md rules. Verify matches by reading surrounding code.
2. Respect the codebase. Auto-fixes must match code style. Follow safety guardrails in auto-remediation-patterns.md.
3. Never break functionality. If unsure, ask the user. Never auto-fix across 3+ files.
4. Progressive loading. Only read phase files and references when needed. This keeps context lean.
5. Parallel scanning. For >200 files, use the security-scanner agent. Deduplicate across batches.
6. Graceful degradation. Fall back to Grep when CLI tools missing. Fall back to HTML when no PDF tool.
7. Mask secrets. Show only first 4 and last 4 characters.
8. Recheck mode. Only verify prior findings, don't full-scan.
9. Use STACK_PROFILE. Skip irrelevant checks for the detected platform.
10. Generate all outputs. Markdown report + PDF/HTML + remediation tickets.

Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

• Author: ReeperReepx
• Source: ReeperReepx/Security-Audit-Claude-Skill
• License: MIT

Install and usage instructions live in the source repository linked above.