Git rebase threat detection is the discipline of catching those silent, intentional, or accidental rewrites before they slip into production. Rebases can squash, reorder, or drop commits. They can rewrite the author, change timestamps, strip metadata, and even hide the work of others. In a fast-moving CI/CD pipeline, this is a point of attack and a point of failure.
When an attacker gains write access to a repo, rebase becomes a surgical tool for manipulation. You might see normal diff output, but the underlying commit graph has shifted. Merge commits vanish. History is rewritten to remove security fixes, introduce backdoors, or mask malicious code.
Effective Git rebase security starts with detecting graph anomalies. Compare commit hashes against trusted baselines. Scan for orphaned commits, altered parents, and unusual author signatures. Flag changes in commit density or unusual gaps in timestamps. Automated monitoring should trigger alerts for any forced push following a rebase event.