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Microsoft Defender External Attack Surface Management vs Qualys CyberSecurity Asset Management comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Nov 2, 2025

Review summaries and opinions

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

Categories and Ranking

Microsoft Defender External...
Ranking in Attack Surface Management (ASM)
14th
Average Rating
7.6
Reviews Sentiment
6.0
Number of Reviews
2
Ranking in other categories
Microsoft Security Suite (33rd)
Qualys CyberSecurity Asset ...
Ranking in Attack Surface Management (ASM)
2nd
Average Rating
9.0
Reviews Sentiment
7.0
Number of Reviews
35
Ranking in other categories
Vulnerability Management (7th), Patch Management (4th), Cyber Asset Attack Surface Management (CAASM) (3rd), Software Supply Chain Security (4th)
 

Mindshare comparison

As of January 2026, in the Attack Surface Management (ASM) category, the mindshare of Microsoft Defender External Attack Surface Management is 3.1%, up from 2.6% compared to the previous year. The mindshare of Qualys CyberSecurity Asset Management is 3.9%, up from 2.1% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Attack Surface Management (ASM) Market Share Distribution
ProductMarket Share (%)
Qualys CyberSecurity Asset Management3.9%
Microsoft Defender External Attack Surface Management3.1%
Other93.0%
Attack Surface Management (ASM)
 

Featured Reviews

AndyChan3 - PeerSpot reviewer
General manager at a tech services company with 201-500 employees
Enhanced visibility and exposes vulnerabilities but needs more integration
I am currently in the pilot stage of implementing Microsoft External Attack Surface Management (EASM). My organization is transitioning to a comprehensive track of Microsoft solutions, and we will move to full-scale production in another year, maybe Microsoft External Attack Surface Management…
AN
Cyber Security Specialist at UBS Financial
Customized dashboards and quick deployment support comprehensive asset management
We use the True Risk Score for vulnerability prioritization, though we do not solely rely upon it since some assets may be decommissioned soon or not in use. From Qualys CyberSecurity Asset Management, we primarily focus on internet-facing assets. We have created separate tasks for internet-facing assets and track the True Risk dashboard specifically for these assets. If the True Risk Score is higher for any internet-facing assets, then we take action accordingly. The True Risk Score is very helpful for prioritization. The initial setup was straightforward and easy. We needed to create customized tags, group them twice, and validate whether the operating system detection was true positive or false positive. We encountered some false positives, which required coordination with the IT team for verification. In six months, we had approximately 20-25 machines that needed verification on a weekly basis. We coordinated with the IT team to identify the exact operating system specifications.

Quotes from Members

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

Pros

"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."
"Microsoft External Attack Surface Management helps improve the visibility of my exposed vulnerabilities and provides an overview of my security posture across the globe."
"The comprehensive view that Qualys CyberSecurity Asset Management gives us on our assets enables us to go to a single screen and get a good idea of our holistic asset count."
"The most valuable feature is the Management sensor, which helps identify gaps in policy agent availability, thereby improving agent utilization."
"Qualys CSAM helps find all the assets. It categorizes information based on various criteria such as host and tenant version. It provides in-depth visibility into both hardware and software."
"Overall, I would give Qualys CyberSecurity Asset Management a nine out of ten."
"The fact that it is integrated makes it very easy to understand."
"It de-duplicates findings and helps you understand what the vulnerabilities from your external scans and your external attack surface management are and how they connect to the vulnerabilities on your internal scans."
"Qualys CyberSecurity Asset Management provides accurate content that identifies all the endpoints, making it better in that way, and the review results for finding vulnerabilities and reporting also show that it identifies most of them, helping us complete tasks in 3.5 days instead of five."
"I use it primarily with tagging, asset counts, and groups that we can put them in, and we also use it to tell if a device has been merged and seen in Qualys CyberSecurity Asset Management, so that's beneficial for us too."
 

Cons

"With Microsoft, support is always crazy, it's not easy to get support."
"The integration is not as seamless compared to competitors like Palo Alto."
"Further integration across different Microsoft products would be an improvement."
"Further research and development are needed to enhance integration with other cloud agents and products, particularly improving communication with external products and vendors."
"The main aspect that needs improvement is the user interface, which should be more intuitive."
"From the user experience perspective, we need a simpler interface and reduced complexity in certain features, particularly with the Qualys Query Language."
"In my opinion, the area that needs improvement is the role-based access control (RBAC). The access privilege management needs to be more robust and streamlined to enhance user access management."
"As of now, the support, results, and low false positives do not necessitate changes."
"The UI needs improvement as it can become overwhelming after prolonged use."
"The only minor issue is occasionally being redirected to multiple teams, causing slight delays."
"Further research and development are needed to enhance integration with other cloud agents and products, particularly improving communication with external products and vendors."
 

Pricing and Cost Advice

Information not available
"Though the solution is considered expensive, if bundled with other services such as VMDR or cloud agents, its value would significantly increase. It is currently a bit costly, but with bundling, it could become attractive to more customers."
"The pricing for Qualys Cybersecurity Asset Management is reasonable, with an annual subscription costing around $1,000 per year or a monthly subscription starting at approximately $72 per month, depending on the specific package and features included."
"The pricing is reasonable relative to the features provided, as it collects all module data and operates as a main, centralized inventory, making it a cost-effective solution."
"The pricing is fair. I would love to see the price come down a little bit, but we do get a lot of value out of it. We are squeezing every ounce of value we can out of the tool."
"The pricing is market-competitive."
"Qualys is competitively priced for its features. Its pricing is suitable for large organizations with more than 4,000 assets, but for smaller organizations with few assets, such as banks, the costs might be high. They should come up with packages that are suitable for small organizations."
"It is cost-effective because, in a single tool, we are getting everything. All the solutions come in a single license or price."
"The cost for Qualys CyberSecurity Asset Management is high."
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Top Industries

By visitors reading reviews
Computer Software Company
17%
Financial Services Firm
10%
Outsourcing Company
6%
Energy/Utilities Company
6%
Computer Software Company
13%
Financial Services Firm
13%
Manufacturing Company
9%
Comms Service Provider
6%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
No data available
By reviewers
Company SizeCount
Small Business8
Midsize Enterprise2
Large Enterprise23
 

Questions from the Community

What needs improvement with Microsoft Defender External Attack Surface Management?
Further integration across different Microsoft products would be an improvement. Introduction of more AI automation into the products would also be beneficial. The integration is not as seamless co...
What is your primary use case for Microsoft Defender External Attack Surface Management?
I am currently in the pilot stage of implementing Microsoft External Attack Surface Management (EASM). My organization is transitioning to a comprehensive track of Microsoft solutions, and we will ...
What needs improvement with Qualys CyberSecurity Asset Management?
I think the one thing Qualys CyberSecurity Asset Management can do better is the package management and the updating process. Knowing that you can't update any of the packages until you've done the...
What is your primary use case for Qualys CyberSecurity Asset Management?
I primarily use it for a small, single-site, multi-source setup with multi-WAN inputs. I have a main fiber connection and a couple of failovers while managing different networks across different se...
 

Overview

Find out what your peers are saying about Microsoft Defender External Attack Surface Management vs. Qualys CyberSecurity Asset Management and other solutions. Updated: December 2025.
881,082 professionals have used our research since 2012.