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

 

Comparison Buyer's Guide

Executive SummaryUpdated on Feb 8, 2026

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)
15th
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)
3rd
Average Rating
9.0
Reviews Sentiment
7.0
Number of Reviews
35
Ranking in other categories
Vulnerability Management (6th), Patch Management (4th), Cyber Asset Attack Surface Management (CAASM) (3rd), Software Supply Chain Security (2nd)
 

Mindshare comparison

As of August 2026, in the Attack Surface Management (ASM) category, the mindshare of Microsoft Defender External Attack Surface Management is 2.9%, down from 3.0% compared to the previous year. The mindshare of Qualys CyberSecurity Asset Management is 3.4%, down from 3.6% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Attack Surface Management (ASM) Mindshare Distribution
ProductMindshare (%)
Qualys CyberSecurity Asset Management3.4%
Microsoft Defender External Attack Surface Management2.9%
Other93.7%
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…
Nicki Møller - PeerSpot reviewer
Information Security Engineer at a manufacturing company with 5,001-10,000 employees
Enables automation and quick access to necessary information
One of the significant challenges Qualys is discovery, which I know Microsoft excels at. I can't recall how well Qualys performs this function; it seems I might be missing some details. However, if there's one key aspect to focus on, it's discovery—the ability to identify assets that you are not aware of, even when you can see they are present. Understanding what those assets are is crucial. With Qualys CyberSecurity Asset Management, it was very difficult to extract detections from the system. The features within Qualys are limited to what they have developed. Sometimes a complete overview is needed to push to a Power BI dashboard, Splunk, ServiceNow, or other platforms. The export process is incredibly challenging. We needed a developer to write a hundred-line Python script that would loop over certain assets due to export limitations. Qualys CyberSecurity Asset Management could improve its integration capabilities. While it generates substantial data, correlating it with other data sources can be challenging. The export process is difficult, and pre-built integrations with other tools could be enhanced for better process implementation.

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."
"The most valuable aspect we receive from Qualys is the remediation."
"Regarding return on investment, I first look at the reality of the environment and the decrease in critical vulnerabilities with Qualys CyberSecurity Asset Management, which equals a positive return on investment."
"I would rate Qualys CSAM a ten out of ten."
"Authorized and unauthorized software visibility is the best feature for me."
"The fact that it is integrated makes it very easy to understand."
"We have had zero attacks since we enabled all the features in Qualys CSAM."
"Our favorite features are the tagging and the ability to quickly find assets in the portal."
"The support has been excellent; they are responsive and effectively bring in the appropriate resources to help solve problems."
 

Cons

"Further integration across different Microsoft products would be an improvement."
"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."
"Qualys CyberSecurity Asset Management could be more cost-effective by offering a lower price point or integrating with existing VMDR features."
"Currently, whenever the agent is running, it consumes over ten percent of my CPU, indicating that CPU consumption is another area Qualys needs to address."
"In our reporting, we faced a challenge syncing with cloud devices."
"Currently, in the EASM module, the scan frequency is limited to once daily, but allowing end users control over scan scheduling would be advantageous."
"All required features are available in Qualys CSAM. However, it would be helpful if Qualys CSAM started incorporating AI models. An inclusion of threat details for AI and LLM-related risks would be beneficial."
"Qualys CSAM is not super responsive, and there can be delays sometimes, especially with the network passive sensor. You might see duplicate objects which eventually disappear but it takes time. If that can be done faster, it will be great."
"There can be further simplification to reduce the overall noise and provide ESAM-related data."
"The activity log is terrible."
 

Pricing and Cost Advice

Information not available
"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."
"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."
"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."
"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."
"Qualys offers excellent value for money."
"The pricing is market-competitive."
"The pricing for Qualys CSAM is nominal."
"It is cost-effective because, in a single tool, we are getting everything. All the solutions come in a single license or price."
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Top Industries

By visitors reading reviews
Outsourcing Company
11%
Computer Software Company
11%
Financial Services Firm
9%
Comms Service Provider
6%
Financial Services Firm
15%
Comms Service Provider
8%
Computer Software Company
8%
Manufacturing Company
8%
 

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: June 2026.
908,858 professionals have used our research since 2012.