Git rebase can hide secrets deep in a project’s DNA, and code scanning must be sharp enough to catch them before they spread. Hidden credentials, API keys, and proprietary code fragments often linger inside rebased branches, tucked away in rewritten commits. Without proper scanning, they slip past reviews, merge into production, and trigger costly breaches.
Rebase rewrites history. That’s its power—and its danger. When developers squash, edit, or reorder commits, old data doesn’t vanish; it shifts. Secrets you thought were deleted may still exist in reflogs or alternate commit trees. Standard scanning tools often focus on the visible HEAD branch. They miss what’s buried in dangling commits, orphaned histories, or remote repos that were pushed before the rewrite.
To detect secrets in rebase workflows, scanning must understand Git internals. This means indexing all reachable and unreachable commits, scanning both pre- and post-rebase states, and flagging sensitive tokens stored anywhere in the object database. Automated hooks can trigger scans during interactive rebase operations, catching exposures before the rewritten branch leaves a developer’s machine.