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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)
6th
Ranking in Extended Detection and Response (XDR)
4th
Average Rating
8.4
Reviews Sentiment
6.8
Number of Reviews
112
Ranking in other categories
Endpoint Protection Platform (EPP) (4th), Ransomware Protection (2nd), AI-Powered Cybersecurity Platforms (1st)
Microsoft Defender XDR
Ranking in Endpoint Detection and Response (EDR)
8th
Ranking in Extended Detection and Response (XDR)
5th
Average Rating
8.4
Reviews Sentiment
7.1
Number of Reviews
108
Ranking in other categories
Microsoft Security Suite (4th)
Stellar Cyber Open XDR
Ranking in Endpoint Detection and Response (EDR)
57th
Ranking in Extended Detection and Response (XDR)
38th
Average Rating
0.0
Reviews Sentiment
7.0
Number of Reviews
2
Ranking in other categories
Security Information and Event Management (SIEM) (44th), User Entity Behavior Analytics (UEBA) (27th), Network Traffic Analysis (NTA) (16th), Security Orchestration Automation and Response (SOAR) (24th), Network Detection and Response (NDR) (20th), Identity Threat Detection and Response (ITDR) (18th)
 

Mindshare comparison

As of June 2026, in the Extended Detection and Response (XDR) category, the mindshare of Cortex XDR by Palo Alto Networks is 4.6%, down from 5.1% compared to the previous year. The mindshare of Microsoft Defender XDR is 4.2%, down from 5.9% compared to the previous year. The mindshare of Stellar Cyber Open XDR is 2.1%, up from 1.5% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Extended Detection and Response (XDR) Mindshare Distribution
ProductMindshare (%)
Cortex XDR by Palo Alto Networks4.6%
Microsoft Defender XDR4.2%
Stellar Cyber Open XDR2.1%
Other89.1%
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.
reviewer2812758 - PeerSpot reviewer
Infosec at a government with 10,001+ employees
Integrated defenses have unified threat hunting, phishing simulations, and identity investigations
I appreciate Microsoft Defender XDR's MDE, Microsoft Defender tool, which has Attack Simulator. Instead of doing a phishing campaign and getting a separate tool, Microsoft Defender XDR does it all. These features of Microsoft Defender XDR have helped us conduct a phishing campaign quarterly, which has been beneficial. I also appreciate the fact that it has Defender for Office integrated, Defender for Identity, and everything integrated together. I would describe the process of using Microsoft Defender XDR to prioritize incidents in my security operations as quite decent. I appreciate the automatic alerting system where any incidents or alerts we receive come directly to our email. From there, we can open the email, go directly to Microsoft Defender XDR, and start our investigations and remediations. I perceive the integration of security and identity access management in Microsoft Defender XDR as affecting my identity protection strategies very well because it is well integrated with Purview, integrated well with Entra ID, and integrated well with Exchange. I especially appreciate MDO, the Office product. If anything happens and I want to conduct an investigation, it takes me directly to Exchange, where I can also investigate any emails or phishing incidents. Instead of going to different portals, everything can be done from Microsoft Defender XDR. If necessary for further investigation, Microsoft Defender XDR then directs me to that environment. I would assess the integration of AI in guiding security actions within Microsoft Defender XDR as quite positive. Recently, Security Copilot went big, and it is beneficial that I can use that, especially to write KQL. I can do threat hunting features and intelligence all within using Microsoft's Security Copilot. It also has a nice AI feature for threat hunting. I know that all the Defender logs go to Sentinel, and I can pull it up from Microsoft Defender XDR or from Sentinel. The fact that I can actually do all that within Microsoft Defender XDR is a nice feature. In the top module, I can do threat lookups, and I can actually type KQLs in Microsoft Defender XDR and look up incidents. Predictive shielding has had a nice impact on my proactive security measures. It is beneficial that it has, similar to Entra ID, a secure score. For me to improve the product, the secure score helps me out. If I rate it from highest to lowest, I can see what things I can improve. Secure score helps me see what areas I can improve in Microsoft Defender XDR to increase my score and bring it to 80 or more. Knowing Microsoft Defender XDR from using it since 2019, before COVID days, I know that they have improved significantly. It is much more user-friendly and has a very nice vulnerability feature that I find handy and useful. The fact that this feature integrates into Intune is also very decent.
Hrishiraj Bhattacharjee - PeerSpot reviewer
Founder & CEO at Team Karimganj
Correlates incidents, allows for quicker identification and helps prioritize investigations
The only challenge is, and that’s where we come into play, it’s a pretty high-tech platform. So, it’s difficult for small and medium-sized organizations to manage it on their own. It’s a very complex system. It requires a lot of expertise. All my guys who work on it have gone through certification from Stellar itself. There are three different certifications that you need to complete. Only then are you certified by Stellar to work on it. It’s a very complex platform. Not everyone can use it. A simple IT engineer or system admin won’t be able to handle it because it’s quite complex. You need to have an understanding of the industry, the subject, and the tool. So, just purchasing this tool or license and then using it on your own would be very difficult to configure and manage on a day-to-day basis. The pricing model is not suitable for small and medium companies, particularly small companies. The minimum pricing model they have is suitable for companies with more than one thousand users. So, if someone has 50 to 100 users, like typical small companies, it’s difficult for them because the cost involved is high. Stellar would charge you for those thousand users, but you do not need all those users. So what are they going to do? I guess Stellar does not want to target small companies directly and maybe relies on resellers and MSPs like us to sell it. So, that is something I would recommend changing. Otherwise, it’s a great tool, but because of the pricing model, small companies are unable to leverage the advantage of this beautiful tool. So, the pricing model should be suitable for small and medium businesses. The product currently has vulnerability monitoring and everything. But if they could also do something about vulnerability management and maybe patch management, that would be nice.

Quotes from Members

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

Pros

"I like the centralized console and the predictive analysis it does of malware. It is very stable and also scalable."
"It has absolutely improved the way our organization functions, we are more secure, it is giving us more peace of mind, and it has found malicious activity happening on our endpoints that probably would not have been detected if we didn't have it."
"I recommend this solution to others because it is easy to manage, reliable, and overall good to use."
"Traps is quite a stable product. Once it was properly deployed and configured, you have nothing to be worried about."
"The live terminal is probably the best thing ever. It gives you the access to get straight onto any machine."
"Based on my experience, I would recommend Cortex XDR by Palo Alto Networks to other people."
"The best feature of Cortex XDR by Palo Alto Networks is that it collects logs from different sections such as the endpoint, the network, and the cloud, making it easy to investigate alerts, collect some of the investigation packages related to the infected machines, and provide live response."
"We've had a significant increase in blocking with a decrease in false positives, because it's looking at how the files work, not just a list of files that it's been told to look for."
"The attack simulation is excellent; initially, this feature wasn't very robust, but Microsoft improved what we could achieve with it. We can now customize our practice phishing emails and include our company logo, for example. Attack simulation also helps integrate with third-party solutions where applicable and provides an overview of our security architecture through testing. The summary includes areas for improvement in our protection and what steps we need to take to get there."
"It's a great threat intelligence source for us, providing alerts for things it detects on the network and on the machines. We've used it often when there is a potential incident to see what was done on a computer. That works quite nicely because you can see everything that the user has done..."
"The most valuable feature is the DLP because that's where we can have an added data protection layer and extend it not just to emails but to the documents that users are working on. We can make sure that sensitive data is tagged and flagged if unauthorized parties are using it."
"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..."
"What I found most valuable in Microsoft 365 Defender is that it's able to scan emails and protect users from dangerous links or attachments."
"The native capabilities are quite good as it slips in seamlessly as part of our integration and gives a lot of flexibility in terms of configuration and customization as per the business requirements."
"It reduces the risk of users accidentally clicking on phishing emails."
"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."
"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

"Whenever the tool releases a new version when deploying the product across the organization, I feel like there are some disturbances in the CPU usage after upgrading the tool to the latest version."
"It is not very strong in terms of endpoint management. It should have additional features like DLP, encryption, or advanced device control. Currently, Cortex is good in terms of the security of the endpoints, but it is not as good as other vendors in terms of the management of the endpoint."
"It'll help if customization was easier."
"The solution should offer more dashboards and they should be better customized."
"They are charging for Network Traffic Analyzer (NTA) services, so if the per GB data could be provided at a certain level free of cost or at the same cost which the customer is taking for the entire bundle, that would be better."
"It is not easy to sell Cortex XDR, not because it isn't a good tool. Its marketing needs to be improved."
"The tool needs to be improved in terms of integration and interface."
"When it comes to core analysis, and security analysis, Cortex needs to provide more information."
"At times, when we have an incident email and we click on the link for that incident, it opens a pop-up, but there is nothing. It has happened a couple of times."
"When we do investigations, it would be better if Microsoft could populate the host dashboard more. When we open any host for investigation, we want the entire timeline of what is happening on the host, including all the users logging in, their hardware, Windows version, etc."
"Offboarding latency should be reduced. Even after a device has been successfully offboarded using a particular offboarding script, it still shows up as onboarded."
"The dashboards could be improved."
"The Defender agent itself is more compatible with Windows 10 and Windows 11. Other than these two lines, there are so many compatibility issues. Security is not only about Microsoft. The core technical aspects of it are quite good, but it would be good if they can better support non-Microsoft solutions in terms of putting the agents directly into VMware and other virtualization solutions. There should be more emphasis on RHEL and other operating systems that we use, other than Windows, in the server category."
"Defender XDR could provide recommendations for threat-hunting queries. Some people do not know how to write an advanced threat query, so we need to spend time training them."
"There is definitely scope for improvement in the automation area. Because the solution is a SaaS platform, we don't have the overall ability to automate stuff.... There is no direct way to go ahead because it's a SaaS platform."
"The licensing process needs improvement and clarification, as it is currently difficult to understand which features are licensed to which users."
"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

"Our license will require renewal in August, after which the maintenance will continue as usual."
"I am using the Community edition."
"The tool's price is moderate."
"It has a higher cost than other solutions, like CrowdStrike or Microsoft’s EDR tools, but it reduces the cost of our operations because it’s a new generation antivirus tool."
"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."
"Compared to CrowdStrike, Cortex XDR is an expensive solution."
"This is an expensive solution."
"The price was fine."
"Microsoft Defender XDR is expensive."
"It is 15 dollars per server per month. It is worth it, but it can be costly. It depends on the company's size."
"Microsoft Defender XDR is already included in our Office 365 licensing. It is better because we're saving money by using it."
"I believe that the pricing of the licensing is fair."
"There are no issues with pricing, but sometimes, the clarity in licensing is a concern."
"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 price could be better. Normally, the costs depend on the country you're located in for the license. When we were in the initial stage, we went with the E5 license they call premium standard. It cost us around $5.20 per month for four users."
"It has consistently offered highly appealing academic pricing, with distinct rates for higher education and general educational purposes."
"It’s a single license platform."
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Top Industries

By visitors reading reviews
Construction Company
12%
Financial Services Firm
11%
Comms Service Provider
9%
Manufacturing Company
8%
Computer Software Company
10%
Financial Services Firm
9%
Manufacturing Company
7%
Government
7%
Manufacturing Company
13%
Comms Service Provider
9%
Computer Software Company
9%
Financial Services Firm
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business47
Midsize Enterprise20
Large Enterprise51
By reviewers
Company SizeCount
Small Business46
Midsize Enterprise29
Large Enterprise41
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 is your experience regarding pricing and costs for Microsoft 365 Defender?
My experience with the pricing, setup costs, and licensing of Microsoft Defender XDR is that we are on an E5 license,...
What needs improvement with Microsoft 365 Defender?
From my perspective, Microsoft Defender XDR can be improved with better visibility in certain areas where I can trigg...
What is your primary use case for Microsoft 365 Defender?
My main use cases for Microsoft Defender XDR are telemetry, advanced hunting, and the ability to perform host isolati...
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: May 2026.
896,942 professionals have used our research since 2012.