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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)
58th
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) (24th), Network Traffic Analysis (NTA) (19th), Security Orchestration Automation and Response (SOAR) (24th), Network Detection and Response (NDR) (20th), Extended Detection and Response (XDR) (35th), Identity Threat Detection and Response (ITDR) (19th)
 

Mindshare comparison

As of January 2026, in the Endpoint Detection and Response (EDR) category, the mindshare of Microsoft Defender for Endpoint is 7.9%, down from 11.2% 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 Endpoint7.9%
Stellar Cyber Open XDR0.8%
Other91.3%
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

"Integration between Microsoft products is very easy."
"The solution has good performance, I have not seen a problem."
"I like the real-time protection features. Windows Defender will detect if there's a threat like a Trojan or something like that but Kaspersky lets it run normally."
"The folders and files protection are its most valuable features. These have been valuable because of the increase in ransomware attacks. With these two features, I can ensure that no changes have been made to our system or endpoint folders and files without the user being aware."
"Defender for Endpoint has significantly improved our security posture."
"The whole bundle of the product, which is similar to other Microsoft products, is valuable. Ten years ago, you had third-party stuff for different things. You had one solution for email archiving and another third-party one for something else. Nowadays, Microsoft Office covers all the stuff that was formerly covered by third-party solutions. It is the same with antivirus. The functionality is just basic. You have the scanning, and then you also have a kind of cloud-based protection and reporting about your environment. With Microsoft Security Center, you have a complete overview of your environment. You know the software inventory, and you have security recommendations. You can not only see that the antivirus is up to date; you can also see where are the vulnerabilities in your system. Microsoft Security Center tells you where you have old, deprecated software and what kind of CVEs are addressed. It's really cool stuff."
"This is a very go, proactive solution to threat protection using advanced analysis."
"One of the best features of Microsoft Defender for Endpoint is called Threat and Vulnerability Management, TVM, which provides real-time visibility of vulnerabilities and misconfiguration at our endpoint level and helps prioritize and remediate based on risk information."
"Stellar Cyber Open XDR offers these functionalities at a more affordable price, making it easier for me to position it with price-sensitive customers."
"It can integrate with almost any cybersecurity tool available in the market."
 

Cons

"A challenge is that it is not a multi-tenant solution. Microsoft's tenant is a licensed tenant. I'm an MSSP. So, I have multiple customers. In Microsoft's world, that means that I can't just buy an E5 license and give that out to all my customers. That won't work because all of the customer data resides within a single tenant in Microsoft's world. Other products—such as SentinelOne, Palo Alto Cortex, CrowdStrike, et cetera—are multi-tenant. So, I can have it at the top of the pyramid for my analyst to look into it and see all the customers, but each customer's data is separate. If the customer wants to look at what we see, they would only see their data, whereas in the Microsoft world, if I've got multiple customers connected to the same Microsoft tenant, they would see everybody else's data, which is a privacy problem in Europe. It is not possible to share the data, and it is a breach of privacy."
"There's scanning going on that occasionally topples the memory, causing everything to freeze. This should be fixed."
"There are still some things where I think they don't quite match up or are a bit hard to find or understand."
"We need better support to learn about the product. Documentation is available, but we need some kind of training program so that we can get a better understanding of the product."
"It would be helpful if they included XDR features, on top of the EDR functionality."
"The initial support process can be lacking as first-line support is sometimes not well-versed technically, resulting in repeated exchanges to finally engage a knowledgeable support person."
"The central console needs improvement. Both McAfee and Symantec antivirus have dashboards. These integrate with a server and work on my antivirus or some other product. However, with Microsoft Defender, you use Microsoft Group Policy Object. Defender does not provide a central console. Therefore, if you implement Defender, then maybe use another tool for the central view."
"It can be more secure."
"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

"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."
"The subscription is part of Windows, so we don't have to pay anything extra for this product."
"It isn't cheap, but it's reasonable and fair."
"Licenses depend upon what you are looking for and what kind of security do you want to implement. There are costs in addition to the standard licensing fees. When we used to buy Symantec, we used to spend on 100 licenses. We used to spend approximately $2,700 for those many licenses, and they came in packs. To add one more license, I had to buy a pack with a minimum of 10 licenses. I had to spend on nine extra licenses because I can't get a single license, whereas when we go for Microsoft, we can get as many licenses as we want. If I have 100 users today, and tomorrow, I have 90 users, I can release my 10 licenses next month. With any other software vendor, you buy licenses for one year, and you have to stick with that. If today you have 100 licenses, and tomorrow, you have 50, you have already paid for one year's license. You can't go back and tell them that I don't require these 50 licenses because I have lost my 50 users, but with Microsoft Defender, licensing is on a monthly basis. It gives you both options. You can go yearly and save on it, or you can go monthly. You will, again, save on it. It is very fair everywhere."
"Currently, for us, Windows Defender is free with the purchase of Windows Server. Pricing is an important point for us when we are looking at the competitors of this solution. If we choose to go with another vendor, we will have to pay some license fees."
"AV solutions are pretty expensive because they are necessary, not just for protection, but many businesses need them to comply with regulatory bodies and receive accreditation. We recently purchased an E5 license, which gives us access to the entire Microsoft suite. I would say the pricing is competitive; most tools of this kind are similarly priced. There are minor differences between the competitors, but they aren't spectacularly different. Defender for Endpoint makes sense because all our solutions are in the same place, paid for with a single license. The subscription price is around £50 per user per month, though it may have increased slightly."
"The solution is free with Windows."
"It is an expensive solution. It would be nice if it could be included with the Microsoft Office package."
"It’s a single license platform."
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Top Industries

By visitors reading reviews
No data available
Manufacturing Company
13%
Computer Software Company
10%
Comms Service Provider
8%
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.
881,082 professionals have used our research since 2012.