Secret Scanner is a command-line tool that scans Git repositories for sensitive information like private keys, API secrets, and tokens by matching file names, extensions, and content against a signature database. Built as an enhancement to the Gitrob project, it extends secret scanning capabilities across multiple Git providers including GitHub, GitLab, and Bitbucket. The tool is written to support local repository scanning, multi-repository batch operations, and customizable filtering through environment configuration, with results exportable as JSON or console output.