Microsoft Defender for Endpoint (MDE) must enable Share endpoint alerts with Microsoft Compliance Center.

Severity	Group ID	Group Title	Version	Rule ID	Date	STIG Version
medium	V-275991	SRG-APP-000279	MSDE-00-001100	SV-275991r1119721_rule	2025-07-15	1

Description
Malicious code protection mechanisms include, but are not limited to, antivirus and malware detection software. To minimize potential negative impact to the organization that can be caused by malicious code, it is imperative that malicious code is identified and eradicated. This setting forwards endpoint security alerts and their triage status to Microsoft Purview portal, allowing enhanced insider risk management policies with alerts and the ability to remediate internal risks before they cause harm. Forwarded data is processed and stored in the same location as Office 365 data.

Description

Malicious code protection mechanisms include, but are not limited to, antivirus and malware detection software. To minimize potential negative impact to the organization that can be caused by malicious code, it is imperative that malicious code is identified and eradicated. This setting forwards endpoint security alerts and their triage status to Microsoft Purview portal, allowing enhanced insider risk management policies with alerts and the ability to remediate internal risks before they cause harm. Forwarded data is processed and stored in the same location as Office 365 data.

ℹ️ Check
Access the MDE portal as a user with at least an MDE Administrator or equivalent role: 1. In the navigation pane, select Settings >> Endpoints >> Advanced features (under General). 2. Verify the slide bar for "Share endpoint alerts with Microsoft Compliance Center" is set to "On". If the slide bar for "Share endpoint alerts with Microsoft Compliance Center" is not set to "On", this is a finding.

✔️ Fix
Access the MDE portal as a user with at least an MDE Administrator or equivalent role: 1. In the navigation pane, select Settings >> Endpoints >> Advanced features (under General). 2. Set the slide bar for "Share endpoint alerts with Microsoft Compliance Center" to "On".