Attack surface reduction rules

Concept

Rules in Microsoft Defender for Endpoint that block risky software behaviors commonly abused by malware, such as macros in Office files downloaded from the internet.

Title graphic: Attack surface reduction rules (Concept)

Type	Concept
Documentation	learn.microsoft.com/defender-endpoint/attack-surface-reduction-rules-overview

Articles about Attack surface reduction rules (2)

Microsoft Defender: правило скорочення поверхні атаки для кінцевих точок
2026-03-06 · Mirko Peters
Захистіть кінцеві точки за допомогою правил скорочення поверхні атаки. Перевіряйте ефективність правил ASR за допомогою просунутих запитів KQL для кращого виявлення та точнішого на
Microsoft Defender: Attack Surface Reduction Rule for Endpoint
2026-03-06 · Mirko Peters
Harden endpoints with Attack Surface Reduction rules. Audit ASR rule effectiveness using advanced KQL queries for improved detection and exclusion tuning.

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Sources

Documentation: learn.microsoft.com/defender-endpoint/attack-surface-reduction-rules-overview
Feed for this topic (RSS): entity/attack-surface-reduction-rules/feed.xml
Articles on this topic: 2

Maintained by Mirko Peters (Microsoft MVP) · Last updated: 2026-11-06