This is a mistake I’ve nearly made a couple of times when pushing commits on to GitHub. You are developing in your local environment, giving no thought to security and its time to commit your changes into your GitHub repository. Where there any keys in that code? Apparently there is quite a bit of the time and hackers know it. So be careful and develop some good habits even when in your local environment. You can read more about the threat over at programmableweb.com.