To protect your personal information, you should keep both your GitHub Enterprise account and any associated data secure.
Your security on GitHub Enterprise, as well as every other account you have on the Web, is best served with a strong password that isn't shared with any other person, service, or site.
GitHub Enterprise credentials include not only your password, but also the access tokens, SSH keys, and application API tokens you use to communicate with GitHub Enterprise. Should you have the need, you can reset all of these access credentials yourself.
You can create a personal access token and use it in place of a password when performing Git operations over HTTPS with Git on the command line or the API.
To keep your credentials secure, you should regularly audit your SSH keys, deploy keys, and review authorized applications that access your GitHub Enterprise account.
You should review deploy keys to ensure that there aren't any unauthorized (or possibly compromised) keys. You can also approve existing deploy keys that are valid.
You can connect your GitHub Enterprise identity to third-party applications using OAuth. When authorizing one of these applications, you should ensure you trust the application, review who it's developed by, and review the kinds of information the application wants to access.
You should review your authorized applications to verify that no new applications with expansive permissions are authorized, such as those that have access to your private repositories.
You can review your account's security log to better understand the actions you've performed in the last 90 days.
If you commit sensitive data, such as a password or SSH key into a Git repository, you can remove it from the history. To entirely remove unwanted files from a repository's history you can use either the
git filter-branch command or the BFG Repo-Cleaner.
GitHub Enterprise asks you for your password before you can modify your email address, authorize third-party applications, or add new public keys, or initiate other sudo-protected actions.
You may be alerted to a security incident in the media, such as the discovery of the Heartbleed bug, or your computer could be stolen while you're signed in to your GitHub Enterprise instance. In such cases, changing your password prevents any unintended future access to your account and projects.