AC-8: System Use Notification

From NIST's SP800-53:

a. Display [Assignment: organization-defined system use notification message or banner] to users before granting access to the system that provides privacy and security notices consistent with applicable laws, executive orders, directives, regulations, policies, standards, and guidelines and state that: 1. Users are accessing a U.S. Government system; 2. System usage may be monitored, recorded, and subject to audit; 3. Unauthorized use of the system is prohibited and subject to criminal and civil penalties; and 4. Use of the system indicates consent to monitoring and recording; b. Retain the notification message or banner on the screen until users acknowledge the usage conditions and take explicit actions to log on to or further access the system; and c. For publicly accessible systems: 1. Display system use information [Assignment: organization-defined conditions], before granting further access to the publicly accessible system; 2. Display references, if any, to monitoring, recording, or auditing that are consistent with privacy accommodations for such systems that generally prohibit those activities; and 3. Include a description of the authorized uses of the system.