git

One of the first things I do when approaching a target is to search for and read through all of their public source code repositories on sites like github.com looking at every file in every directory. I also check through the commit history to see what has changed with each commit. Yes this takes time to do it and it isn’t as fun as jumping straight into hacker typer mode fuzzing inputs on web applications and APIs but it is invaluable. Once I’ve finished the official code repositories of the target I then look at contributors to each of the projects and do the same thing for each of those. Developers often share a lot of code, config, SSH keys, usernames, and passwords between work and personal projects. This has the following benefits: