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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)
5th
Average Rating
8.4
Reviews Sentiment
6.8
Number of Reviews
110
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)
4th
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)
56th
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) (47th), 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) (17th)
 

Mindshare comparison

As of May 2026, in the Extended Detection and Response (XDR) category, the mindshare of Cortex XDR by Palo Alto Networks is 4.7%, down from 5.1% compared to the previous year. The mindshare of Microsoft Defender XDR is 4.5%, down from 6.1% compared to the previous year. The mindshare of Stellar Cyber Open XDR is 2.1%, 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 XDR4.5%
Cortex XDR by Palo Alto Networks4.7%
Stellar Cyber Open XDR2.1%
Other88.7%
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

"It is a simple platform to use."
"This software helps us understand any issues that may arise when someone is not at work."
"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."
"One of the main benefits of the solution is its intelligence to correlate the events into an incident."
"Cortex is the best solution for avoiding security breaches, malware attacks, and other kinds of security issues."
"The solution is a new generation XDR that has a lot of artificial intelligence modules."
"There are a lot of lead solutions in this space, however, Palo Alto is number one."
"They did what they said. This solution could apply to any scenario."
"You can configure the product very easily."
"I have found the ability to delete unwanted threats beneficial."
"We use Microsoft 365 Defender to help secure threats of the Office package, such as Word, Excel, and PowerPoint, and additionally, it can fix issues."
"Within advanced threat hunting, the tables that have already been defined by Microsoft are helpful. In the advanced threat hunting tab, there were different tables, and one of the tables was related to device info, device alert, and device events. That was very helpful. Another feature that I liked but didn't have access to was deep analysis."
"All of the security components are valuable including, antiphishing, antispam, and stage three antivirus."
"It saves time for us because we don't need to go through another team or get a separate team involved just for data transfers."
"I like that it's fully integrated with Windows, Microsoft 365 Exchange Online, and Outlook. It is better than other antivirus solutions because it's fully integrated with all Microsoft products. It's easy to integrate them and onboard all Windows devices from SCCM."
"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."
"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

"The only issues that we have are, one the cost, two the dashboard is not very intuitive, even though you can drill down within the dashboard, we usually have to gather information from other sources to determine locations and if its a false positive."
"The complexity and confusion regarding product variants, such as XDR, Forexiant, and Forexon, must be addressed."
"The technical support is not very good. I find the process difficult."
"In general, the price could be more competitive."
"While using Cortex, I noticed some aspects that could be improved, such as increasing the synchronization speed between XDR and Xnor."
"The onboarding process could be better."
"The main issue I could point out is the offline agents and the way that it is missing."
"If Palo Alto reduces the pricing slightly for their products, it would make them more scalable in markets such as India and globally for cybersecurity."
"This solution could be improved if it included features such as those offered by Malwarebytes."
"Improving scalability, especially for very large tenants, could be beneficial for Microsoft Defender XDR."
"It would be beneficial to reduce the number of clicks required to navigate between blades, as the current navigation and breadcrumb system can be a bit confusing. Some inconsistencies exist between blades, which could be improved for a more seamless user and UI experience."
"The only problem I find is that the use cases are built-in. There is no template available that you can modify according to your organization's standards. What they give is very generic, the market standard, but that might not be applicable to every organization."
"In the beginning, it's difficult to navigate the system because it is quite large. Just trying to find your way and understand how the system works can be hard. After spending quite a lot of time searching it's a lot easier, but I wish it were a bit more user-friendly when you're trying to find things."
"The initial time spent setting up and configuring Defender XDR is a bit longer than the other solutions. If everything were on one portal, the platforms for managing policies or alerts would be simpler. We must automate and manage policies on Intune rather than the same portal."
"There is no comprehensive visibility, making it less user-friendly."
"Microsoft Defender XDR could be improved with a lower price."
"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 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."
"In terms of the cost Cortex XDR by Palo Alto Networks is very expensive because we are a Mexican company and when you translate dollars to pesos the cost is very high. The solution is very expensive for Mexican companies. I understand that they have international prices, but I do not think it offsets the price enough for many companies in countries, such as Mexico. The amount it is reduced is not a massive percentage."
"Our license will require renewal in August, after which the maintenance will continue as usual."
"If one wishes to work with another team or large number of users at a future point, he must purchase a license for them."
"Cortex XDR is a costly solution."
"We didn't have to pay any additional fee for the cloud instance. It just came with the renewal, which was nice."
"The price of the solution is high for the license and in general."
"The price is on the higher side, but it's okay."
"Microsoft Defender XDR is already included in our Office 365 licensing. It is better because we're saving money by using it."
"The solution is too expensive."
"365 Defender is billed per account. I don't know the exact price, but my supervisor told me that Microsoft Defender is cheaper than the alternatives. It's bundled, so you get all the features in one place."
"It has consistently offered highly appealing academic pricing, with distinct rates for higher education and general educational purposes."
"I find the pricing to be quite competitive, especially considering its inclusion in our E5 subscription, which provides a comprehensive set of functionalities."
"The solutions price is fair for what they offer."
"For Defender, they have Endpoint Plan 1 and Endpoint Plan 2, but I don't know on what basis they have classified Endpoint Plan 1 and Plan 2, but it has given me enough pain to pick and design Endpoint Plan 1 or Endpoint Plan 2 for my organization. In fact, we are still struggling with it. Too many SKUs are confusing. There should not be too many SKUs, and they shouldn't charge for every new feature."
"The bundling of software makes it easier to manage our setup, but Microsoft purposefully obfuscates this through marketing ploys to hide costs."
"It’s a single license platform."
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Top Industries

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

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business46
Midsize Enterprise20
Large Enterprise50
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 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 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 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: April 2026.
894,998 professionals have used our research since 2012.