Secret Scanning is the automated detection of credentials, API keys, and other secrets in source code, repositories, logs, and other text-based data.
Secret Scanning
Secret Scanning is the automated detection of credentials, API keys, and other secrets in source code, repositories, logs, and other text-based data.
Why It Matters
GitGuardian detected 12.8 million secrets in public GitHub repos in 2023. Automated secret scanning is the first line of defense — catching leaked credentials before attackers do. GitHub, GitLab, and third-party tools like GitGuardian and TruffleHog all provide scanning capabilities.
How It Works
Scanners use pattern matching (regex for known key formats like `sk-proj-`, `AKIA`, `SG.`) and entropy analysis (detecting high-entropy strings that look like keys). They scan commits, pull requests, CI/CD logs, and even Slack messages.
Best Practices
- Enable scanning on all repos, not just public ones
- Run pre-commit hooks to catch secrets before they reach Git
- Integrate scanning into CI/CD pipelines
- Set up alerts that trigger immediate rotation/revocation
Common Mistakes
- Only scanning the main branch (secrets hide in feature branches)
- Ignoring scan alerts ("it's just a test key")
- Not scanning CI/CD configuration and logs
How ShieldKey Helps
ShieldKey makes secret scanning findings less critical. Even if a scanner finds a leaked Shield Token, you revoke it instantly — no key rotation needed. The real API key was never in your code.
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How does secret scanning work?
Secret scanners use regex patterns and entropy analysis to detect API keys and credentials in code. They scan Git history, PRs, and CI/CD outputs to catch leaks before attackers find them.