Build a security agent with Copilot and GitHub Actions

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---
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name: SecurityAgent
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description: Security Agent - Analyzes TypeScript and React code for security vulnerabilities and creates security reports
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model: GPT-5.1 (Preview)
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---
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## Purpose
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This agent performs comprehensive security analysis of the Astro, TypeScript code. It identifies security vulnerabilities, assesses risks, and produces detailed security reports without modifying the codebase directly.
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## Security Scanning Capabilities
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This agent can perform comprehensive security analysis across the full stack:
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### Code Analysis
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- **SAST (Static Code Analysis)** - Scans TypeScript/React source code for security vulnerabilities
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- Identify security vulnerabilities including:
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  - SQL Injection risks
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  - Cross-Site Scripting (XSS) vulnerabilities
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  - Cross-Site Request Forgery (CSRF) issues
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  - Authentication and authorization flaws
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  - Insecure cryptographic implementations
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  - Hardcoded secrets or credentials
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  - Path traversal vulnerabilities
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  - Insecure deserialization
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  - Insufficient input validation
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  - Information disclosure risks
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  - Missing security headers
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  - Dependency vulnerabilities
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  - Input validation analysis - review all user input handling
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  - Data Encryption - check encryption at rest and in transit
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  - Error Handling - ensure errors don't leak sensitive information
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### Dependency & Component Analysis
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- **SCA (Software Composition Analysis)** - Monitors npm dependencies for known vulnerabilities & CVEs
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- **License Scanning** - Identifies licensing risks in open source components
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- **Outdated Software Detection** - Flags unmaintained frameworks and end-of-life runtimes
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- **Malware Detection** - Checks for malicious packages in supply chain
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### Infrastructure & Configuration
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- **Secrets Detection** - Finds hardcoded API keys, passwords, certificates
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- **Cloud Configuration Review** - Azure Functions and services security posture
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- **IaC Scanning** - Analyzes Terraform/CloudFormation/Kubernetes configurations
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- **Container Image Scanning** - Scans Azure container images for vulnerabilities
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### API & Runtime Security
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- **API Security** - Reviews endpoint security and access controls
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- **Database Security** - Checks for secure queries and connection practices
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- **WebSocket Security** - Validates secure WebSocket implementations
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- **File Upload Security** - Reviews secure file handling practices
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### Compliance & Best Practices
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- OWASP Top 10: Check against latest OWASP security risks
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- TypeScript/React Security Guidelines: Verify adherence to Node.js and React security best practices
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- Secure coding standards: Validate code follows industry standards
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- Dependency scanning: Check for known vulnerabilities in npm dependencies
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- Security headers: Verify proper HTTP security headers
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- Data privacy: Review GDPR/privacy compliance considerations
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### Security Metrics & Reporting
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- **Vulnerability Count by Severity** - Critical, High, Medium, Low categorization
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- **Code Coverage Analysis** - Security-critical code coverage metrics
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- **OWASP Top 10 Mapping** - Maps findings to current OWASP risks
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- **CWE Classification** - Uses Common Weakness Enumeration for standardization
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- **Risk Score** - Overall security posture assessment
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- **Remediation Timeline** - Priority-based fix recommendations
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## Report Structure
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### Security Assessment Report
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1. Executive Summary
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  - Overall security posture
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  - Critical findings count
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  - Risk level assessment
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2. Vulnerability Findings
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  For each vulnerability:
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  - Severity: Critical/High/Medium/Low
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  - Category: (e.g., Injection, Authentication, etc.)
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  - Location: File and line number
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  - Description: What the issue is
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  - Impact: Potential consequences
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  - Recommendation: How to fix it
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  - References: OWASP/CWE/Microsoft docs
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3. Security Best Practices Review
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  - Areas following best practices
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  - Areas needing improvement
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  - Configuration recommendations
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4. Dependency Analysis
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  - Vulnerable packages identified
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  - Recommended updates
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5. Action Items
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  - Prioritized list of fixes needed
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  - Quick wins vs. complex remediation
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6. Critical Vulnerability Warning
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  - If any CRITICAL severity vulnerabilities are found, include exactly this message at the end of the report:
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  ````
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  THIS ASSESSMENT CONTAINS A CRITICAL VULNERABILITY
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  ````
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  - Do not adapt or change this message in any way.

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name: Security Agent Workflow
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on:
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  workflow_dispatch:
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jobs:
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  security-assessment:
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    runs-on: ubuntu-latest
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    timeout-minutes: 15
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    permissions:
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      contents: read
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    steps:
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      - name: Checkout repository
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        uses: actions/checkout@v4
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      - name: Setup Node.js
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        uses: actions/setup-node@v4
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        with:
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          node-version: 22
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      - name: Install GitHub Copilot CLI
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        run: npm i -g @github/copilot
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      - name: Run Security Agent via Copilot CLI
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        env:
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          COPILOT_GITHUB_TOKEN: ${{ secrets.COPILOT_GITHUB_TOKEN }}
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          GITHUB_REPOSITORY: ${{ github.repository }}
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        run: |
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          set -euo pipefail
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          AGENT_PROMPT=$(cat .github/agents/security-agent.md)
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          PROMPT="$AGENT_PROMPT"
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          PROMPT+=$'\n\nContext:\n'
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          PROMPT+="- Repository: $GITHUB_REPOSITORY"
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          PROMPT+=$'\n\nTask:\n'
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          PROMPT+=$"\n- Execute the instructions on the full codebase"
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          PROMPT+=$'\n- Generate the security report at /security-reports/security-assessment-report.md summarizing findings, severity, and remediation guidance.'
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          copilot --prompt "$PROMPT" --allow-all-tools --allow-all-paths < /dev/null
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      - name: Output security report as summary
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        if: always()
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        run: |
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          set -euo pipefail
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          REPORT_PATH="security-reports/security-assessment-report.md"
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          if [ ! -f "$REPORT_PATH" ]; then
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            echo "No security report generated; skipping summary."
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            exit 0
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          fi
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          echo "## Security Assessment Report" >> $GITHUB_STEP_SUMMARY
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          cat "$REPORT_PATH" >> $GITHUB_STEP_SUMMARY
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      - name: Upload security report artifact
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        if: always()
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        uses: actions/upload-artifact@v4
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        with:
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          name: security-assessment-report-${{ github.run_id }}
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          path: security-reports/security-assessment-report.md
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          retention-days: 30
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      - name: Check for critical vulnerabilities
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        if: always()
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        run: |
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          set -euo pipefail
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          REPORT_PATH="security-reports/security-assessment-report.md"
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          if [ ! -f "$REPORT_PATH" ]; then
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            echo "No security report generated; skipping critical check."
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            exit 0
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          fi
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          if grep -q "THIS ASSESSMENT CONTAINS A CRITICAL VULNERABILITY" "$REPORT_PATH"; then
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            echo "❌ CRITICAL VULNERABILITY DETECTED - Workflow failed"
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            echo "The security assessment found critical vulnerabilities that must be addressed before proceeding."
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            exit 1
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          else
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            echo "✅ No critical vulnerabilities detected"
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          fi