testing-for-sensitive-data-exposure

Installation
SKILL.md

Testing for Sensitive Data Exposure

When to Use

  • During authorized penetration tests when assessing data protection controls
  • When evaluating applications for GDPR, PCI DSS, HIPAA, or other data protection compliance
  • For identifying leaked API keys, credentials, tokens, and secrets in application responses
  • When testing whether sensitive data is properly encrypted in transit and at rest
  • During security assessments of APIs that handle PII, financial data, or health records

Prerequisites

  • Authorization: Written penetration testing agreement with data handling scope
  • Burp Suite Professional: For intercepting and analyzing responses for sensitive data
  • trufflehog: Secret scanning tool (pip install trufflehog)
  • gitleaks: Git repository secret scanner (go install github.com/gitleaks/gitleaks/v8@latest)
  • curl/httpie: For manual endpoint testing
  • Browser DevTools: For examining local storage, session storage, and cached data
  • testssl.sh: TLS configuration testing tool
Related skills
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First Seen
Mar 15, 2026