Github Search is a quite powerful and useful feature that can be used to search for sensitive data on repositories. Collection of Github dorks can reveal sensitive personal and/or organizational information such as private keys, credentials, authentication tokens, etc. This list is supposed to be useful for assessing security and performing pen-testing of systems.
github-dork.py is a simple python tool that can search through your repository or your organization/user repositories. It's not a perfect tool at the moment but provides basic functionality to automate the search on your repositories against the dorks specified in the text file.