An Acceptable Use Policy (AUP) is a foundational cybersecurity document that defines the proper and prohibited ways employees, contractors, and authorized users can access and utilize an organization's information systems, networks, software, devices, and data. This essential security control establishes clear guidelines for digital conduct, protecting organizational assets from misuse, unauthorized access, and potential data breaches while ensuring compliance with internal standards, industry best practices, and legal regulations.

By explicitly detailing permissible activities—such as internet usage, email communication, software installation, and handling of sensitive information—an AUP significantly mitigates operational risks associated with human error or malicious intent. It serves as a proactive measure that fosters accountability and security awareness, helping organizations maintain system integrity, safeguard proprietary data, and ensure operational continuity in today's evolving threat landscape.