AU-13—Monitoring For Information Disclosure
>Control Description
a. Monitor [Assignment: organization-defined open-source information and/or information sites] [Assignment: organization-defined frequency] for evidence of unauthorized disclosure of organizational information; and b. If an information disclosure is discovered: 1. Notify [Assignment: organization-defined personnel or roles]; and 2. Take the following additional actions: [Assignment: organization-defined additional actions].
>Supplemental Guidance
Unauthorized disclosure of information is a form of data leakage. Open-source information includes social networking sites and code-sharing platforms and repositories. Examples of organizational information include personally identifiable information retained by the organization or proprietary information generated by the organization.