Service Summary

Microsoft Defender Advanced Threat Protection (ATP) antivirus software is available for all Mason-owned Windows and Mac devices managed in MESA or Jamf. Only devices managed can receive the antivirus software.

Key Features

  • Always-on scanning using file and process behavior monitoring and other real-time protection
  • Discovers vulnerabilities and misconfigurations in real-time without the need for agents or periodic scans
  • Detects and blocks apps that are deemed unsafe, but may not be detected as malware
  • Eliminates risky or unnecessary attack vectors (paths hackers use to gain unauthorized access) and restricts dangerous code from running
  • Leverages artificial intelligence to automatically investigate alerts and remediate complex threats
  • Uses behavior-based machine learning to identify suspicious activity and advanced attack techniques
  • Cloud-delivered protection that includes near-instant detection and blocking of new and emerging threats
  • Regularly updates to keep antivirus up-to-date

Getting This Service

Microsoft Defender ATP is available to Mason-owned Windows or Mac systems managed through MESA or Jamf 

Unmanaged Mason-owned systems will need to be managed in order to receive the updated antivirus protection. To request to have a Mason-owned device managed, click the Request Managed Enrollment button.

System Administrators

Please contact the ITS Support Center for additional information.


This service is available 24/7, excluding planned outages, normal maintenance windows, and unavoidable events. Maintenance windows are Sundays from 7 to 11 a.m. but may be extended to 2 p.m., if needed. If maintenance is required outside of these hours, it will be announced on the Alerts & Bulletins page.


All users of the George Mason University network must adhere to University Policy Number 1301: Responsible Use of Computing.

Additional Information

Students and employees using personally-owned computers are encouraged to continue using antivirus software to protect their systems. ITS recommends these free options:

  • For Windows: Avast, AVG, Sophos, Microsoft Windows Defender
  • For Mac: Avast, AVG, Sophos