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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

"From a single pane of glass, you can easily manage all of your endpoints."
"The multi-layered approach to the product gives you confidence that it will stop exploits, ransomware, worms, or viruses from compromising endpoints, essentially providing peace of mind."
"Cortex XDR features advanced threat detection capabilities."
"The protection offered by this product is good, as is the endpoint reporting."
"After deploying Traps, we saw the performance of the network improve by 65 to 70 percent."
"Cortex XDR by Palo Alto Networks has helped lighten the load of our security analysts because it was the major tool that we were using and the one we utilized most."
"Cortex covers everything I need. It's a perfect solution. Cortex provides a different level of visibility because it's an extended EDR, allowing you to grab logs from the network and firewalls. Palo Alto invented the concept of the extended EDR or XDR."
"It has pretty much everything we need and works well within the Palo Alto ecosystem."
"Microsoft 365 Defender's most valuable feature is the ability to control the shadow IP."
"There is also one dashboard that shows us the status of many controls at once and the details I can get... It gives a great overview of many areas, such as files, emails, chats, and links. Even with the apps, it gives you a great overview. In one place you can see where you should look into things more deeply..."
"Defender XDR has a feature called the timeline that lets you track all activities. It helps a lot with investigations."
"Microsoft Defender XDR provides strong identity protection with comprehensive insights into risky user behavior and potential indicators of compromise."
"You can configure the product very easily."
"The best feature is probably the alert generation. When I do a security reset, the other session triggers instantly from the Defender console, and I can work on it. The policies are three times, but they are also ready to install it."
"The most valuable feature of the solution stems from the fact that Microsoft Defender XDR is easy to integrate with other Microsoft platforms or products."
"The incident threat response and its ability to facilitate effective remediation against threats are the standout features."
"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 an upcoming release, the solution could improve by proving hard disk encryption. If it could support this it would be a complete solution."
"While using Cortex, I noticed some aspects that could be improved, such as increasing the synchronization speed between XDR and Xnor."
"It's very time-consuming to log support issues and the people that answer the tickets aren't very knowledgeable."
"The connection to the internet has not performed as expected."
"The encryption is not up to the mark."
"They've been having some issues with updating their endpoint agents, and it has been quite frustrating."
"The product's pricing needs improvement. They could provide more discounts. Additionally, the dashboard and control panel could be enhanced."
"There is a severe gap in functionality between Windows, Linux, and Mac versions. For example all folder restriction settings are Windows only. Traps 5.0+ does not have SAML / LDAP integration."
"There could be a way to proactively monitor unusual activity ."
"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."
"There is no common area where we can manage all the policies for the EDR, third-party solutions, devices, servers, Windows, Mac, etc., but it's on the road map, and we ware waiting for that feature."
"The solution does not offer a unified response and standard data."
"The patching capability should be there. Patching is something that you cannot do even though you see the vulnerabilities present in your environment. For patching, you have to depend on another solution."
"For some scenarios, it provides good visibility into threats, and for some scenarios, it doesn't. For example, sometimes the URLs within the emails have destinations, and you do get a screenshot and all further details, but it's not always the case. It would be good if they did a better job of enabling that for all the emails that they identified as malicious. When you get an email threat, you can go into the email and see more details, but the URL destination feature doesn't always show you a screenshot of the URL in that email. It also doesn't always give you the characteristics relating to that URL. It would be quite good if the information is complete where it says that we identified this URL, and this is what it looks like. There should be some threat intel about it. It should give you more details."
"While the XDR platform offers valuable functionalities, it falls short of other solutions in its ability to deliver a cohesive identity experience."
"The support from Microsoft could improve. There are times I have to wait for a response from a qualified specialist."
"Support is an issue because they have a limited number of resources."
"I would rate the stability at about five to six. The platform requires some fine-tuning, especially when integrating data sources and creating connectors."
 

Pricing and Cost Advice

"It has a yearly renewal."
"Compared to CrowdStrike, Cortex XDR is an expensive solution."
"Cortex XDR by Palo Alto Networks is quite an expensive solution."
"Cortex XDR’s pricing is very reasonable."
"The price of the product is not very economical."
"I feel it is fairly priced."
"It is present, but when compared to other competitive products, I would say it is not less expensive; however, when all of the other added values are considered, the price is reasonable."
"We didn't have to pay any additional fee for the cloud instance. It just came with the renewal, which was nice."
"I believe that the pricing of the licensing is fair."
"Microsoft Defender XDR's licensing is complicated."
"It can be complex to navigate since customers have varying licensing agreements across Microsoft. If they go straightforward with E5 for all users, it's simple, but combinations based on budget constraints can complicate things."
"The bundling of software makes it easier to manage our setup, but Microsoft purposefully obfuscates this through marketing ploys to hide costs."
"Microsoft Defender XDR is expensive."
"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."
"Microsoft Defender falls within a mid-tier price range compared to other security solutions."
"Microsoft Defender XDR is included in our license."
"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%
Government
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
Cortex XDR by Palo Alto vs. SentinelOne SentinelOne offers very detailed specifics with regard to risks or attacks. ...
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.
883,619 professionals have used our research since 2012.