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Ms defender antivirus7/13/2023 ![]() ![]() ![]() Windows Defender Application Control (WDAC) Kernel drivers (see Block abuse of exploited vulnerable signed drivers) Manipulation/modification of the file system Modifying registry settings including exclusions These techniques are prevented differently on different operating systems. Preventing tampering on a single deviceĪttackers use various tampering techniques to disable Microsoft Defender for Endpoint on a single device. You can view health status for Microsoft Defender Antivirus health and sensors in the device health reports in Microsoft Defender for Endpoint. If you're using Group Policy, we recommend disabling local overrides for Microsoft Defender Antivirus settings and disabling local list merging. However, those methods are more susceptible to tampering than by using Microsoft Intune, Configuration Manager, or Microsoft Defender for Endpoint Security Configuration Management. On Windows devices, Microsoft Defender Antivirus can be managed by using Group Policy, Windows Management Instrumentation (WMI), and PowerShell cmdlets. Managed devices centrally, such as by Microsoft Intune, Microsoft Defender for Endpoint Security Configuration Management, or Configuration Manager. ![]() ![]() Make sure security intelligence and antivirus updates are installed.Onboard devices to Defender for Endpoint.In order to provide an effective defense against tampering, devices must be healthy. Configure Conditional Access policies to keep untrusted users and devices isolated.Follow the best practice of least privilege.The foundation for defending against tampering is following a Zero Trust model. Organization wide tamper resiliency is built on Zero Trust As such, the anti-tampering capabilities of Microsoft Defender for Endpoint extend beyond preventing tampering of a single device to detecting attacks and minimizing their impact. The ultimate goal of attackers isn't to affect just one device, but rather to achieve their objective such as launching a ransomware attack. Tampering is the general term used to describe attackers attempts to impair the effectiveness of Microsoft Defender for Endpoint. ![]()
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