MT.1158: Scan should be scheduled.
| ID | MT.1158 |
| Severity | Low |
| Suite | Mito |
| Product | Defender |
| Related products | Intune |
| Feature | Endpoint antivirus |
| Security area | Devices and endpoints |
| Resource type | Policy |
| User impact of fixing | Low |
| Effort to fix | Low |
| Framework controls | nist-800-53-r5:SI-3 Malicious Code Protection |
| Reads from | Microsoft Graph |
What this checks and how to fix it
Section titled “What this checks and how to fix it”Checks that a scheduled scan day is configured in all assigned Microsoft Defender Antivirus policies.
An irregular scan schedule may miss persistent threats on managed devices, allowing malware to remain undetected for extended periods.
Remediation action:
Section titled “Remediation action:”- Open Microsoft Endpoint Manager > Endpoint Security > Antivirus
- Edit the relevant Microsoft Defender Antivirus policy
- Configure Schedule Scan Day to a specific day.
Related links
Section titled “Related links”Mito check. Author: bdrogja. Open-source licences.
Open-source licences. CIS Benchmark material © Center for Internet Security, Inc.; CISA SCuBA baselines are public domain (CC0).
© 2026 Virtual Petals. Mito is a Virtual Petals service, hosted in Microsoft Azure UAE North.
