MT.1161: Cloud Block Level should be High or higher.
| ID | MT.1161 |
| Severity | Medium |
| 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 |
| MITRE ATT&CK | T1204.002 |
| Reads from | Microsoft Graph |
What this checks and how to fix it
Section titled “What this checks and how to fix it”Checks that the cloud block level is set to High or higher in all assigned Microsoft Defender Antivirus policies.
A low cloud block level reduces proactive threat blocking capabilities, allowing more suspicious files to execute without cloud-based analysis.
Remediation action:
Section titled “Remediation action:”- Open Microsoft Endpoint Manager > Endpoint Security > Antivirus
- Edit the relevant Microsoft Defender Antivirus policy
- Set Cloud Block Level to High, High Plus, or Zero Tolerance
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).
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