Repository access control is the set of rules that decides who can read, write, publish, delete, or administer stored software assets such as source code, build artifacts, packages, and container images. It is usually enforced through users, roles, groups, service accounts, API tokens, and policy checks inside a repository platform or artifact manager.
This control is critical because repositories are trusted parts of the software supply chain. If permissions are too broad or bypassed, an attacker may steal private code, upload malicious packages, alter metadata, or change configuration to weaken future defenses. Strong repository access control limits damage with least privilege, separate read and write roles, multi-factor authentication for administrators, audit logs, and regular access reviews. In attacks and defenses alike, the goal is the same: protect the boundary between public access and trusted software distribution.