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

Episodes about Attack surface reduction rules

Building a Secure Microsoft-First MSP

2026-07-16 · Video on YouTube

Building a successful Managed Service Provider today requires far more than device management and helpdesk support. Customers expect proactive security, cloud expertise, and modern identity protection from day one. In this episode of the M365 Show, Mirko…

Microsoft Defender for Endpoint - Simply Explained

2026-07-22 · Video on YouTube

Traditional antivirus can no longer keep up with ransomware, phishing and attackers who move quietly between devices. This plain-English episode is for IT admins and business owners who want to understand Microsoft Defender for Endpoint, from EDR and attack…

Timeline of episodes about Attack surface reduction rules

Articles about Attack surface reduction rules (1)

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.

Glossary

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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
M365.FM episodes on this topic: 2
Articles on this topic: 1

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