--- stage: Manage group: Authentication and Authorization info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#assignments type: concepts --- # Information exclusivity **(FREE)** Git is a distributed version control system (DVCS). This means that everyone who works with the source code has a local copy of the complete repository. In GitLab every project member that is not a guest (reporters, developers, and maintainers) can clone the repository to create a local copy. After obtaining a local copy, the user can upload the full repository anywhere, including to another project that is under their control, or onto another server. Therefore, it is impossible to build access controls that prevent the intentional sharing of source code by users that have access to the source code. This is an inherent feature of a DVCS. All Git management systems have this limitation. You can take steps to prevent unintentional sharing and information destruction. This limitation is the reason why only certain people are allowed to [add users to a project](../user/project/members/index.md) and why only a GitLab administrator can [force push a protected branch](../user/project/protected_branches.md). <!-- ## Troubleshooting Include any troubleshooting steps that you can foresee. If you know beforehand what issues one might have when setting this up, or when something is changed, or on upgrading, it's important to describe those, too. Think of things that may go wrong and include them here. This is important to minimize requests for support, and to avoid doc comments with questions that you know someone might ask. Each scenario can be a third-level heading, e.g. `### Getting error message X`. If you have none to add when creating a doc, leave this section in place but commented out to help encourage others to add to it in the future. -->