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Microsoft Defender for Endpoint vs Stellar Cyber Open XDR comparison

 

Comparison Buyer's Guide

Executive Summary

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 for Endp...
Ranking in Endpoint Detection and Response (EDR)
3rd
Average Rating
8.2
Reviews Sentiment
7.0
Number of Reviews
210
Ranking in other categories
Endpoint Protection Platform (EPP) (2nd), Advanced Threat Protection (ATP) (3rd), Anti-Malware Tools (1st), Microsoft Security Suite (3rd)
Stellar Cyber Open XDR
Ranking in Endpoint Detection and Response (EDR)
57th
Average Rating
0.0
Reviews Sentiment
7.0
Number of Reviews
2
Ranking in other categories
Security Information and Event Management (SIEM) (47th), User Entity Behavior Analytics (UEBA) (25th), Network Traffic Analysis (NTA) (18th), Security Orchestration Automation and Response (SOAR) (24th), Network Detection and Response (NDR) (20th), Extended Detection and Response (XDR) (36th), Identity Threat Detection and Response (ITDR) (19th)
 

Mindshare comparison

As of February 2026, in the Endpoint Detection and Response (EDR) category, the mindshare of Microsoft Defender for Endpoint is 7.3%, down from 11.1% compared to the previous year. The mindshare of Stellar Cyber Open XDR is 0.8%, up from 0.4% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Endpoint Detection and Response (EDR) Market Share Distribution
ProductMarket Share (%)
Microsoft Defender for Endpoint7.3%
Stellar Cyber Open XDR0.8%
Other91.9%
Endpoint Detection and Response (EDR)
 

Featured Reviews

Robert Arbuckle - PeerSpot reviewer
Security Analyst III at a healthcare company with 10,001+ employees
Automatically isolates threats and integrates with logging to reduce response time
Overall, I would evaluate the Microsoft support level that I receive at probably about a seven, but that depends on the day. It has been spotty. We have had issues where the urgency level of the Microsoft support is not as high as ours, especially during a data breach or potential data breach situation. We have had issues with some of the offshore support being lackluster. One specific thing that comes to mind is we were on a support call with our CISO on the call, and the Microsoft agent, who did not actually work for Microsoft, is one of the vendors that Microsoft uses for support, said, "Just to set expectations, my lunch break is in an hour and I am going to go away then." For us, it was already ten o'clock at night and we had been working on this for a couple of hours, trying to get a security engineer on with us. For him to tell us that he was going to go away and have lunch, it was, "Okay, but go find somebody else if you need to." It was just the lackluster approach, and it seemed like he did not really care. We seem to get a lot of this when we get non-Microsoft support. I can identify areas for improvement with Microsoft Defender for Endpoint, as it is kind of a convoluted mess to try to take care of false positives. Especially when they have been identified as false positives but they keep going off over and over again. It is great for my pocketbook because it generates a lot of on-call action, but I would really prefer more sleep at two o'clock in the morning than dealing with false positives. I would say that the unified portal for managing Microsoft Defender for Endpoint is suitable for both teams as they are all in there. It would be great if they would stop moving things around and renaming things, which makes sense. The new XDR portal is pretty nice. Being able to have it central again inside of the regular Security Center without having to open up two windows is helpful. Overall, I think it is pretty good. There is always going to be something that could be improved, such as alerting and the ability to modify alerts would be a little bit helpful to have. Being able to add more data into the alerts and turn off alerts that are not as useful would be beneficial. It is hard to say what the quantitative impact the security exposure management feature has had on our company's security, because a lot of it is kind of subjective. I think we are sitting at around a fifty percent score still, and a lot of it is just kind of unusual circumstances that we cannot really implement without breaking the organization.
JC
Global Director, Commercial Operations at Promasecure LLC
Automated security monitoring increases efficiency, but market visibility needs improvement
I am currently evaluating Stellar Cyber Open XDR in terms of their support. I do not see any major areas for improvement as of now. Their support is good, and the team is small, enabling them to cater to everyone effectively. While I have not encountered significant drawbacks so far, market penetration is challenging due to the product's newness, despite its flexibility and customization features. I find their user interface to be quite good.

Quotes from Members

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

Pros

"It doesn't cause the slowness of the system, which is one of the reasons why I like it."
"Defender is stable enough and is competitive with the other products in the market."
"The stability is great. I haven't seen any outages with Microsoft."
"Defender for Endpoint has significantly reduced our SOC team's workload by automating threat detection and response, allowing them to focus on other critical projects."
"It's pretty easy to scale."
"We are able to productively integrate with existing on-prem, hybrid, or cloud applications."
"It has Kusto Query Language (KQL), so we can use our own queries to find anything."
"For threat-hunting, I'll put some threats in a test scenario. I've downloaded known viruses that are out in the public for testing. They're not really a virus but they've got a signature. Defender for Endpoint will automatically find those, quarantine them for me, and alert me to what it did. It gives me "automated eyes.""
"It can integrate with almost any cybersecurity tool available in the market."
"Stellar Cyber Open XDR offers these functionalities at a more affordable price, making it easier for me to position it with price-sensitive customers."
 

Cons

"I think Microsoft needs to improve some of the security aspects of Defender. The email part, in particular, needs to be improved in terms of security effectiveness."
"I have accounts for administrators and corporate employees, but I also have accounts for students. I can't split these types of accounts. I need a separate configuration for both... I need to research how I can get alerts for only the administrative machines."
"It should support non-Windows products better. Microsoft is now one of the leading vendors in the security area. So, they should be product-independent."
"I want Microsoft Defender to have the ability to deal with some issues automatically, so I don't need to address that issue manually."
"Updates are not coming out of preview quickly enough and it is holding back on the development of the product."
"I miss having an executive dashboard or a simple view for viewing things. Everything is extensive in this solution. Everything is configurable and manageable, but the environment of Microsoft 365 has about 13 administrative dashboards, and in each of the dashboards, there are a gazillion things to set up. It is good for a large enterprise, but for a 200-seat client, you need to see 5% of that."
"There is a need for improvement in reducing false positives."
"Microsoft Defender for Endpoint could provide us with a more holistic approach, such as collaboration. They can provide us with an environment from where we can manage all the endpoints from one central location, such as overall management."
"I would rate the stability at about five to six. The platform requires some fine-tuning, especially when integrating data sources and creating connectors."
"Support is an issue because they have a limited number of resources."
 

Pricing and Cost Advice

"The solution is included with Microsoft Windows."
"For most people, the price of the license is not something that they have to worry about."
"We have a bundle where the price includes all Microsoft products."
"We have seen ROI. Most of the other competing alternatives will cost up to around $30 per user device. We average 400 devices. Therefore, the amount that we save each year is 400 times $30."
"Most people don't realize M365/E5 licenses are an amazing deal. They think "Oh, it's expensive," and I'll ask, "Compared to what?" If you don't have it you will have to buy licenses for multiple products to fill the same security space that you would have gotten with the Microsoft product. Go figure out how much it costs you per product, per user, and then come back and tell me how things add up financially."
"This solution is part of an enterprise license we have."
"The license for Microsoft Defender for Endpoint is included in the license for the Microsoft Windows operating system."
"The licensing fee is a function of your Office 365 license. The feature set you get is a function of the license as well. There is probably an E2 version, an E3 version, and an E5 version. There are several versions, and not all features are the same. So, you might want to check what features you're expecting because you might get shocked. If you only have an E3 license, the capability isn't the same."
"It’s a single license platform."
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Top Industries

By visitors reading reviews
Computer Software Company
10%
Manufacturing Company
9%
Financial Services Firm
8%
Government
8%
Manufacturing Company
13%
Computer Software Company
10%
Comms Service Provider
9%
Government
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business80
Midsize Enterprise40
Large Enterprise92
No data available
 

Questions from the Community

How is Cortex XDR compared with Microsoft Defender?
Microsoft Defender for Endpoint is a cloud-delivered endpoint security solution. The tool reduces the attack surface, applies behavioral-based endpoint protection and response, and includes risk-ba...
Which offers better endpoint security - Symantec or Microsoft Defender?
We use Symantec because we do not use MS Enterprise products, but in my opinion, Microsoft Defender is a superior solution. Microsoft Defender for Endpoint is a cloud-delivered endpoint security s...
How does Microsoft Defender for Endpoint compare with Crowdstrike Falcon?
The CrowdStrike solution delivers a lot of information about incidents. It has a very light sensor that will never push your machine hardware to "test", you don't have the usual "scan now" feature ...
What is your experience regarding pricing and costs for Stellar Cyber Open XDR?
Pricing is a major benefit of Stellar Cyber Open XDR. I rate it between three and four on the cost scale. It offers functionalities at a significantly lower cost than rival products, enabling me to...
What needs improvement with Stellar Cyber Open XDR?
I am currently evaluating Stellar Cyber Open XDR in terms of their support. I do not see any major areas for improvement as of now. Their support is good, and the team is small, enabling them to ca...
What is your primary use case for Stellar Cyber Open XDR?
I use Stellar Cyber Open XDR ( /products/stellar-cyber-open-xdr-reviews ) as a 24/7 security monitoring tool, especially for customers with large and medium networks. It eliminates the need for a d...
 

Also Known As

Microsoft Defender ATP, Microsoft Defender Advanced Threat Protection, MS Defender for Endpoint, Microsoft Defender Antivirus
No data available
 

Interactive Demo

Demo not available
 

Overview

 

Sample Customers

Petrofrac, Metro CSG, Christus Health
Sumitomo Chemical USA, PlastiPak Packaging, University of Denver, Large California State Agency, Large Midwestern American City
Find out what your peers are saying about Microsoft Defender for Endpoint vs. Stellar Cyber Open XDR and other solutions. Updated: December 2025.
881,733 professionals have used our research since 2012.