How to Verify a Rotated API Key Is Truly Gone Using a Re-Scan

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Rotating a leaked credential is only half the job if teams never confirm the old key has been removed from all config files and source code. A post-rotation re-scan compares findings before and after rotation to verify the old value no longer exists in the working tree. The open-source tool dotguard can be installed via npx and scans .env, config, and source files for exposed secrets with no dependencies. It integrates into CI pipelines with a single workflow line, failing the build automatically if a secret is detected before it reaches the default branch. The tool's exit-code-based interface and specific file-and-line reports are designed to keep verification fast, aiming to reduce triage time to roughly five seconds per finding.

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ProgrammingDEV Community ·

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