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Microsoft Defender External Attack Surface Management Reviews

Vendor: Microsoft
3.8 out of 5
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What is Microsoft Defender External Attack Surface Management?

In this era of hybrid work, shadow IT creates an increasingly serious security risk. Microsoft Defender External Attack Surface Management helps cloud security teams see unknown and unmanaged resources outside the firewall.

Get the Attack Surface Management (ASM) Buyer's Guide and find out what your peers are saying about Microsoft Defender External Attack Surface Management, CrowdStrike Falcon, Darktrace and more!
Microsoft Defender External Attack Surface Management is the #13 ranked solution in top Attack Surface Management (ASM) solutions and #32 ranked solution in top Microsoft Security Suite solutions. PeerSpot users give Microsoft Defender External Attack Surface Management an average rating of 7.6 out of 10. Microsoft Defender External Attack Surface Management is most commonly compared to CrowdStrike Falcon: Microsoft Defender External Attack Surface Management vs CrowdStrike Falcon. Microsoft Defender External Attack Surface Management is popular among the large enterprise segment, accounting for 55% of users researching this solution on PeerSpot. The top industry researching this solution are professionals from a computer software company, accounting for 19% of all views.
Buyer's Guide
Attack Surface Management (ASM)
August 2025
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Helped 867,370 peers since 2012

Microsoft Defender External Attack Surface Management mindshare

Product category:
Attack Surface Management (ASM)
As of September 2025, the mindshare of Microsoft Defender External Attack Surface Management in the Attack Surface Management (ASM) category stands at 3.1%, up from 2.8% compared to the previous year, according to calculations based on PeerSpot user engagement data.
Attack Surface Management (ASM) Market Share Distribution
ProductMarket Share (%)
Microsoft Defender External Attack Surface Management3.1%
CrowdStrike Falcon11.9%
Darktrace7.9%
Other77.1%
Attack Surface Management (ASM)
 
 
Key learnings from peers

Valuable Features

  • "Microsoft External Attack Surface Management helps improve the visibility of my exposed vulnerabilities and provides an overview of my security posture across the globe."
  • "Microsoft External Attack Surface Management helps improve the visibility of my exposed vulnerabilities and provides an overview of my security posture across the globe."
  • "It seems to be better at protecting from cyberattacks."

Room for Improvement

  • "The integration is not as seamless compared to competitors like Palo Alto."
  • "Further integration across different Microsoft products would be an improvement."
  • "With Microsoft, support is always crazy, it's not easy to get support."
These insights are based on the in-depth reviews provided by peers to help you make a better buying decision.
Download our Attack Surface Management (ASM) Buyer's Guide for additional reliable information.

Top industries

By visitors reading reviews
Computer Software Company
19%
Financial Services Firm
13%
Manufacturing Company
6%
Comms Service Provider
6%
Energy/Utilities Company
5%
Insurance Company
4%
Construction Company
4%
Retailer
4%
University
4%
Media Company
4%
Performing Arts
3%
Non Profit
3%
Educational Organization
3%
Government
3%
Legal Firm
3%
Transportation Company
3%
Outsourcing Company
3%
Real Estate/Law Firm
2%
Pharma/Biotech Company
2%
Wholesaler/Distributor
1%
Hospitality Company
1%
Mining And Metals Company
1%
Recruiting/Hr Firm
1%
Photography Company
1%
Security Firm
1%
Marketing Services Firm
1%
Logistics Company
1%
Leisure / Travel Company
1%
International Affairs Institute
1%
Consumer Goods Company
1%

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Related questions

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Product Categories

Product Categories
Attack Surface Management (ASM)
Microsoft Security Suite

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Microsoft Defender External Attack Surface Management Reviews Summary
Author infoRatingReview Summary
General manager at a tech services company with 201-500 employees3.5I am piloting Microsoft External Attack Surface Management, transitioning to its full adoption. It enhances visibility of vulnerabilities but needs better integration with Microsoft products. Asset discovery requires manual input, and more AI automation would be useful.
Président at ARS Solutions4.0We use Microsoft Defender External Attack Surface Management to protect against cyberattacks, finding it impressive but not superior to SentinelOne yet. Support is challenging, especially for smaller companies. ROI is demonstrated through incident detection, highlighting cost savings and potential downtime reduction.