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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
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)
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

"The product is mostly automated, and we do not have to make decisions, because all the decisions are made by the product itself and we are not required to create any custom policies since the policies that are created are well defined in the product itself."
"There has been a significant reduction of approximately 70% to 80% in our internal MTTR and MTTD metrics, now around five to eight minutes whereas previously it was hours, which has helped tremendously."
"Its ability to react to cyber data attacks is awesome. That is pretty much the use of it. What blows your mind is the ability to access your assets remotely and see what is actually going on with them. You can not only see them in a console. You can also react very rapidly to your assets that are compromised."
"Automation and playbooks have helped me significantly, as Cortex Xnor's playbooks predefine the workflow of the automation, such as response processes, alert triggering, and enriching the context, efficiently detecting and blocking malicious attacks with firewalls while eliminating workload and speeding responses for next-generation operations."
"The product is very good, it has caught a lot of exploits that most products would not."
"On a scale from one to ten, I would rate Cortex XDR by Palo Alto Networks a nine."
"If you are looking for security, mainly for advanced threat prevention from ransomware and malware attacks, I would recommend Cortex."
"The tool's use cases are relevant to security."
"The most valuable feature is probably the aggregation and correlation of the different telemetry points with Defender for Identity, Defender for Endpoint, and Defender for Cloud Apps. All of these various things are part of that portal. We've wanted that single pane of glass for years."
"It gives a lot of flexibility in terms of configuration and customization as per the business requirements."
"Defender is easy to use. It has a nice console, and everything is all in one place."
"It has great stability."
"Defender XDR has a feature called the timeline that lets you track all activities. It helps a lot with investigations."
"Microsoft Defender XDR is very comprehensive, covering a lot of the services, tools, and applications that we use, so it's very efficient, and it works out of the box."
"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."
"The most valuable features are machine learning, AI, and auto-remediation of none malicious alerts."
"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

"Cortex XDR by Palo Alto Networks could improve its user interface, which is more complicated compared to competitors such as SentinelOne."
"The installation should be easier and the Palo Alto pre-sales and sales teams should have more information on the product because they don't know what they are selling."
"Initially, we got to have a lot of false positives when we onboarded, but nowadays it's quite smooth."
"It's not an ideal choice for smaller businesses, as you need a minimum of 200 endpoints to even use the solution at all."
"The MAC agent is not as robust feature-wise as the PC version."
"There is also no recovery feature; if some endpoint is under attack there must be the possibility of recovering it or restoring it to a normal state."
"There are a large number of false positives."
"It is not a suitable solution if you are looking for a single product with multiple features such as DLP, encryption, rollback, etc."
"Microsoft support is not very good. You get stuck in low-level support for way longer than you should, instead of them escalating the issue up the chain."
"The abundance of sub-dashboards and sub-areas within the main dashboard can be confusing, even if it all technically makes sense."
"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."
"I'd like to see a wider solution that includes not only desktop devices but also other devices, such as servers, storage cabinets, switching equipment, et cetera."
"There are still some components, such as vulnerability management within the vendor product, where improved integration would be beneficial."
"What could be improved in Microsoft 365 Defender is its licensing, e.g. it should be more consolidated and would be good if it has some optimizations. Improving the alerts and notifications, in terms of adding more details, would also be good for this solution."
"When integrating Defender for Cloud Apps with apps on third-party cloud platforms like AWS or GCP, there are limitations on our ability to control user activities."
"There's still some more work to be done there. Additionally, the limited terminal live access an analyst has is very restricted."
"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 pricing is a little bit on the expensive side."
"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."
"When we first bought it, it was a bit expensive, but it was worth it. The licensing was straightforward."
"The pricing seems fair, and I do like the licensing model. You use wherever they are, and it is elastic."
"We didn't have to pay any additional fee for the cloud instance. It just came with the renewal, which was nice."
"The cost depends on your chosen license type, like Pro or other licenses."
"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."
"It's the most expensive solution, but features-wise, it's quite strong. It's very good for protection, so the results are very good in the case of protection. I would rate it a two out of ten in terms of pricing."
"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 solutions price is fair for what they offer."
"Understanding the subscription model has been a bit challenging, as every feature or requirement comes with an additional cost."
"365 Defender can get expensive because you pay per gigabyte of data ingested. On the other hand, much of the data available in the other Microsoft security solutions are made available relatively cheaply—sometimes at cost or for free. Integrating only a limited set of third-party solutions with Sentinel would be cost-effective. It's much more affordable if companies only have Microsoft stuff."
"The pricing of Microsoft 365 Defender is definitely on the costly side, but with the features and services that Microsoft provides, such as the seamless integration of all the Defender tools, while the price is on the higher side, there is no alternative."
"On average, we pay around 55 euros per user for the services and features we receive."
"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."
"Its licensing and pricing are handled by someone else. My role is limited to incidents or issues with the portal, but you get what you pay for. It is worth the cost."
"It’s a single license platform."
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Top Industries

By visitors reading reviews
Financial Services Firm
12%
Construction Company
11%
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
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.
896,510 professionals have used our research since 2012.