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Microsoft Defender XDR vs Stellar Cyber Open XDR comparison

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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

Cortex XDR by Palo Alto Net...
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Ranking in Endpoint Detection and Response (EDR)
7th
Ranking in Extended Detection and Response (XDR)
6th
Average Rating
8.4
Reviews Sentiment
6.8
Number of Reviews
106
Ranking in other categories
Endpoint Protection Platform (EPP) (5th), Ransomware Protection (2nd), AI-Powered Cybersecurity Platforms (2nd)
Microsoft Defender XDR
Ranking in Endpoint Detection and Response (EDR)
8th
Ranking in Extended Detection and Response (XDR)
4th
Average Rating
8.4
Reviews Sentiment
7.1
Number of Reviews
106
Ranking in other categories
Microsoft Security Suite (4th)
Stellar Cyber Open XDR
Ranking in Endpoint Detection and Response (EDR)
56th
Ranking in Extended Detection and Response (XDR)
35th
Average Rating
0.0
Reviews Sentiment
7.0
Number of Reviews
2
Ranking in other categories
Security Information and Event Management (SIEM) (49th), User Entity Behavior Analytics (UEBA) (27th), Network Traffic Analysis (NTA) (18th), Security Orchestration Automation and Response (SOAR) (24th), Network Detection and Response (NDR) (20th), Identity Threat Detection and Response (ITDR) (17th)
 

Mindshare comparison

As of March 2026, in the Extended Detection and Response (XDR) category, the mindshare of Cortex XDR by Palo Alto Networks is 4.9%, down from 5.6% compared to the previous year. The mindshare of Microsoft Defender XDR is 4.9%, down from 6.7% compared to the previous year. The mindshare of Stellar Cyber Open XDR is 2.0%, up from 1.4% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Extended Detection and Response (XDR) Mindshare Distribution
ProductMindshare (%)
Microsoft Defender XDR4.9%
Cortex XDR by Palo Alto Networks4.9%
Stellar Cyber Open XDR2.0%
Other88.2%
Extended Detection and Response (XDR)
 

Featured Reviews

ABHISHEK_SINGH - PeerSpot reviewer
Senior Process Expert at A.P. Moller - Maersk
Gained full visibility and streamlined threat detection through behavior-based insights and AI integration
Initially, we got to have a lot of false positives when we onboarded, but nowadays it's quite smooth. We have fine-tuned our security policies and allowed different levels of policies to get rid of those false positives. Currently, we are getting a fairly good amount of incidents that are not false positives or benign, but actionable items. The process is streamlined. In the initial days, the operations used to get involved in a lot of benign and other activities, but now the process is streamlined. We are leveraging the auto-detection and remediation plans. The operations teams are now more involved in other business roles as well, not just looking into the logs and fetching out what's happening there. They have fixed a lot of things. Initially, they didn't have IAC code drift detection, cloud posture management, or security posture management, but they have those now. They purchased different vendors and did a merger with that. They have now Prisma Cloud that gets integrated and now they are working with Cortex Cloud. Everything that was negative has now been addressed, and the product altogether looks to be in a very better and mature shape now. Currently, it's more or less detecting the workloads with AI-based best practices. Since most organizations are consuming AI agents and other things, we are looking forward to seeing what other feature enhancements Palo Alto can support in that.
KO
House security operator at Cypress Creek Renewables
Advanced threat hunting saves significant time in tracking and responding to incidents
Microsoft Defender XDR could be improved with a lower price. My main suggestion would essentially be what Copilot is providing, which is a single pane of glass, so I don't have to go to different windows. That's just a workflow consideration for me. It would be great to have all the information centralized into one particular data app. If I need to open up extra ones, I can, however, I would appreciate a future where everything I need is right there on one single pane of glass. Beyond that, there's really nothing else I see that I would want Microsoft to improve.
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

"The interface is easy to use and it is more up to date than our previous solution."
"The positive impacts I see from Cortex XDR by Palo Alto Networks include a complete 360-degree view of our security posture altogether, being a uniform platform where we are ingesting logs from multiple resources."
"What I like about Cortex XDR by Palo Alto Networks is that it is a comprehensive solution that contains everything the organization may need when using endpoints."
"WildFire AI is the best option for this product."
"My advice for others looking into using Cortex is that it is very easy to use and very useful for the customer environment, whether it's a public or private one."
"Traps has drastically reduced our endpoint attack surface via advanced detection capabilities, sandboxing of never before seen programs, and by drastically limiting where executables can launch in the first place."
"The live terminal is probably the best thing ever. It gives you the access to get straight onto any machine."
"The stability of the solution is very good. We have about 100 users on it right now, and we use it twice a week."
"Microsoft Defender XDR is a complete package of different Defender solutions, including Defender for Endpoint, Defender for Office 365, Defender for Cloud, and Sentinel SIEM, among others."
"The incident-level visibility across the cyber attack chain when using Microsoft Defender XDR is great."
"The most valuable feature of all is the full integration with the rest of the software in the operating system and Office 365, as well as Microsoft SCCM. It is quite easy for us to work with the whole instance of Microsoft products. This integration improves the benefits of the whole suite of products."
"The most valuable features are spam filtering, attachment filtering, and antivirus protection."
"From the perspective of Microsoft 365 XDR, the main benefit is a single, centralized dashboard offering the holistic visibility organizations crave."
"The Endpoint Manager is incredible; it has a very straightforward interface and is exceedingly easy to use. Pulling out and deploying different tags or resources is a simple task across various departments with different levels of security. The notifications are also simple and satisfying; it's great to see the bubble informing us which devices are compliant and which are waiting to update."
"You can configure the product very easily."
"The most valuable feature depends on the scenario. For compliance, I like Microsoft Purview Information Protection and Data Loss Prevention. Sentinel is the most helpful feature for security. 365 Defender helps us prioritize threats across an enterprise. It's a crucial feature for the managed services team."
"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

"In terms of areas of improvement, we have not completed our review of the product. We're also looking at other products. So, it's a little bit hard to tell what could be different because we have not completed the review of this product, but based on our experience so far, its implementation is quite complex."
"Cortex XDR by Palo Alto Networks could improve by offering remote management. It would be useful to look at the client's issue to fix it."
"The tool needs to be improved in terms of integration and interface."
"Dashboards do not allow everyone to see what's happening."
"When it comes to core analysis, and security analysis, Cortex needs to provide more information."
"It should support more mobile operating systems. That is one of the cons of their infrastructure right now."
"Cortex XDR could improve its sales support team, including better commission structures and referral programs."
"Cortex XDR could be improved with more GUI features."
"I do think that maybe having a feature within my organization where there are three different domains within which we have to operate would be helpful, as there is currently no unified view within the domains."
"Troubleshooting in Microsoft 365 Defender can be inefficient."
"Microsoft 365 Defender does not have a unique package with emerging endpoint security technologies, such as EDR and XDR."
"The tool gives inconsistent answers and crashes a lot."
"A simple dashboard without having to use MS Sentinel would be a welcome improvement."
"Just like in any solution, the price can always be cheaper."
"The solution can improve the rules and privileges it offers."
"In the future, it would be beneficial for Microsoft to consider making the product more user-friendly or simplified for those who are interested in using it. Currently, it requires a high level of technical expertise, making it challenging for beginners or less experienced individuals."
"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

"Its pricing is kind of in line with its competitors and everybody else out there."
"Licensing for Palo Alto Networks Cortex XDR can be costly, especially when it comes to a hundred users. A license is required for each user, and the subscription must be renewed on a yearly basis."
"The cost depends on your chosen license type, like Pro or other licenses."
"The price was fine."
"The price of the solution could be reduced. I have customers that have voiced that the solution is good for the value but if I want to sell more of the solution the price reduction would help."
"I don't like that they have different types of licenses."
"The pricing is okay, although direct support can be expensive."
"The return on investment is from the user side because we have seen the performance of it increase the delivery time of the product if we are using too many web-based and on-premise applications. In indirect ways, we saw the return of investment in terms of performance and user satisfaction increase."
"Microsoft Defender XDR is priced high."
"They have moved from a licensing model to pay-per-use... The question is: What happens if, for any reason, there's not enough budget to accept this model? That could be a great problem."
"The solution is affordable, and we haven't been hit with any hidden costs. The subscription model is straightforward, and it's easy to understand how much additional features cost. If we need to cancel a license or feature, we do that well in advance to avoid being charged for it, but overall, the pricing and licensing are simple and easy."
"I find the pricing to be quite competitive, especially considering its inclusion in our E5 subscription, which provides a comprehensive set of functionalities."
"Microsoft Defender XDR is already included in our Office 365 licensing. It is better because we're saving money by using it."
"Microsoft Defender XDR's licensing is complicated."
"The price of the solution is high compared to others and we have lost some customers because of it."
"Purchasing Microsoft Defender XDR as part of a Microsoft 365 bundle can be cost-effective, but acquiring it as a standalone product may be more expensive."
"It’s a single license platform."
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Top Industries

By visitors reading reviews
Computer Software Company
10%
Financial Services Firm
9%
Manufacturing Company
9%
Comms Service Provider
7%
Computer Software Company
12%
Financial Services Firm
8%
Manufacturing Company
8%
Comms Service Provider
7%
Manufacturing Company
13%
Comms Service Provider
10%
Computer Software Company
9%
Government
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business44
Midsize Enterprise20
Large Enterprise47
By reviewers
Company SizeCount
Small Business46
Midsize Enterprise26
Large Enterprise38
No data available
 

Questions from the Community

Cortex XDR by Palo Alto vs. Sentinel One
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Comparing CrowdStrike Falcon to Cortex XDR (Palo Alto)
Cortex XDR by Palo Alto vs. CrowdStrike Falcon Both Cortex XDR and Crowd Strike Falcon offer cloud-based solutions th...
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,...
What do you like most about Microsoft 365 Defender?
Microsoft Defender XDR provides strong identity protection with comprehensive insights into risky user behavior and p...
What is your experience regarding pricing and costs for Microsoft 365 Defender?
My experience with pricing, setup, costs, and licensing of Microsoft Defender XDR is tied to our E5 subscription, whi...
What needs improvement with Microsoft 365 Defender?
I am not aware of a mobile app that would be available for my team. With a single analyst, if she is ever away, it wo...
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 f...
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 improvem...
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, especia...
 

Also Known As

Cyvera, Cortex XDR, Palo Alto Networks Traps
Microsoft 365 Defender, Microsoft Threat Protection, MS 365 Defender
No data available
 

Overview

 

Sample Customers

CBI Health Group, University Honda, VakifBank
Accenture, Deloitte, ExxonMobil, General Electric, IBM, Johnson & Johnson and many others.
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 XDR vs. Stellar Cyber Open XDR and other solutions. Updated: February 2026.
883,692 professionals have used our research since 2012.