Microsoft Defender XDR vs Stellar Cyber Open XDR comparison

Microsoft and Stellar Cyber are both solutions in the Extended Detection and Response (XDR) category. Microsoft is ranked #4 with an average rating of 8.3, while Stellar Cyber is ranked #38. Microsoft holds a 4.5% mindshare in XDR, compared to Stellar Cyber’s 2.1% mindshare. Additionally, 98% of Microsoft users are willing to recommend the solution.

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Executive Summary

We performed a comparison between Microsoft Defender XDR and Stellar Cyber Open XDR based on real PeerSpot user reviews.

Find out in this report how the two Extended Detection and Response (XDR) solutions compare in terms of features, pricing, service and support, easy of deployment, and ROI.

To learn more, read our detailed Microsoft Defender XDR vs. Stellar Cyber Open XDR Report (Updated: April 2026).

Buyer's Guide

Microsoft Defender XDR vs. Stellar Cyber Open XDR

April 2026

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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...

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
Product	Mindshare (%)
Microsoft Defender XDR	4.5%
Cortex XDR by Palo Alto Networks	4.7%
Stellar Cyber Open XDR	2.1%
Other	88.7%

Extended Detection and Response (XDR)

Featured Reviews

ABHISHEK_SINGH

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.

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Kunle Oluwadiya

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.

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Hrishiraj Bhattacharjee

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.

Read full review

Quotes from Members

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

Pros

"The information the dashboard provides is very clear."

"After installing this solution, it identified, blocked, and provided the complete attack chain, which was very helpful."

"Cortex Xnor's playbooks predefine the workflow of the automation, such as response processes, alert triggering, and enriching the context, collecting relevant indicators such as hashes, IP addresses, or domains efficiently and can detect and block malicious attacks with firewalls."

"The normal protection was really effective, and we detected situations that if we didn't have Cortex XDR by Palo Alto Networks, it's highly likely that we would have been affected, but it protected the infrastructure."

"If you are looking for security, mainly for advanced threat prevention from ransomware and malware attacks, I would recommend Cortex."

"They did what they said. This solution could apply to any scenario."

"The anti-exploit is impenetrable. We chose Traps because it is the only product that we were not able to get anything past."

"I recognize that Cortex XDR by Palo Alto Networks is one of the best products in its category regarding capabilities."

More Cortex XDR by Palo Alto Networks pros

"As a reseller and partner, the advantages of Microsoft Defender XDR are numerous; I have stopped many threats for many organizations using Defender alone, and I have saved significant IT management time by avoiding manual updates and manual work."

"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."

"Among the most valuable features are the alert timeline, the alert story, which is pretty detailed. It gives us complete insight into what exactly happened on the endpoint. It doesn't just say, "Malware detected." It tells us what caused that malware to be detected and how it was detected. It gives us a complete timeline from beginning to end."

"I rate Microsoft Defender XDR 10 out of 10."

"The biggest return on investment when using Microsoft Defender XDR for me is saving time for the most part."

"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."

"Microsoft Defender XDR has significantly improved our operational security."

"The common and advanced security policies for threat hunting and blocking attacks are valuable."

More Microsoft Defender XDR pros

"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

"Cortex XDR by Palo Alto Networks could improve by offering remote management."

"As an improvement, I would like to see enhanced connection speeds."

"A little bit more automation would be nice."

"While using Cortex, I noticed some aspects that could be improved, such as increasing the synchronization speed between XDR and Xnor."

"The solution needs better reports. I think they should let the customer go in and customize the reports."

"Cortex does not offer an on-premises solution. However, some customers would prefer not to be on the cloud. It would be ideal if it could offer something on-prem as well."

"Cortex XDR could improve its sales support team, including better commission structures and referral programs."

"The solution could improve by providing better integration with their own products and others."

More Cortex XDR by Palo Alto Networks cons

"It would be beneficial to have a more seamless experience with everything consolidated in one place, particularly when dealing with aspects related to the Exchange console."

"I personally have not seen much evidence of how Defender can enhance the story of zero trust for enterprises."

"From an integration standpoint, it is always improving overall. With Security Copilot coming out, as partners, we are waiting for the GDAP support so that we can actually see Security Copilot on behalf of customers if they subscribe to it."

"We should be able to use the product on devices like Apple, Linux, etc."

"Microsoft could improve on threat hunting and build more on threat detection and handling."

"Microsoft Defender XDR could be improved with a lower price."

"At times, there may be delays in the execution of certain actions and their effects."

"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."

More Microsoft Defender XDR cons

"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

"Very costly product."

"The solution has one subscription for endpoint protection and one subscription for detection and response. The two licenses combined give you the BRO version."

"I feel it is fairly priced."

"The price of the solution is high for the license and in general."

"If one wishes to work with another team or large number of users at a future point, he must purchase a license for them."

"It's way too expensive, but security is expensive. You pay for your licensing, and then you pay for someone to monitor the stuff."

"This is an expensive solution."

"Our license will require renewal in August, after which the maintenance will continue as usual."

More Cortex XDR by Palo Alto Networks pricing and cost advice

"The functionality is fantastic, but for medium and small-sized companies it's overpriced. It would be better if it were a little bit cheaper."

"While Microsoft Defender XDR carries a higher cost, its ease of use compared to Defender may justify the investment."

"We've managed to navigate it effectively through our enterprise agreement, and Microsoft's academic discounts have proven to be quite generous."

"Microsoft Defender XDR is expensive."

"The solution is too expensive."

"I believe that the pricing of the licensing is fair."

"On average, we pay around 55 euros per user for the services and features we receive."

"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."

More Microsoft Defender XDR pricing and cost advice

"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

Manufacturing Company

Computer Software Company

11%

Financial Services Firm

Manufacturing Company

Comms Service Provider

Manufacturing Company

13%

Comms Service Provider

10%

Computer Software Company

Financial Services Firm

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

By reviewers
Company Size	Count
Small Business	46
Midsize Enterprise	20
Large Enterprise	49

By reviewers
Company Size	Count
Small Business	46
Midsize Enterprise	29
Large Enterprise	41

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. ...

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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...

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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,...

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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...

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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,...

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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...

See all answers

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...

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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...

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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...

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Comparisons

Microsoft Defender for Endpoint vs Cortex XDR by Palo Alto Networks

Compared 9% of the time

SentinelOne Singularity Endpoint vs Cortex XDR by Palo Alto Networks

Compared 5% of the time

CrowdStrike Falcon vs Cortex XDR by Palo Alto Networks

Compared 4% of the time

Cortex XSIAM vs Cortex XDR by Palo Alto Networks

Compared 3% of the time

Confluera vs Cortex XDR by Palo Alto Networks

Compared 1% of the time

More Cortex XDR by Palo Alto Networks Competitors

CrowdStrike Falcon vs Microsoft Defender XDR

Compared 10% of the time

Wazuh vs Microsoft Defender XDR

Compared 6% of the time

SentinelOne Singularity Endpoint vs Microsoft Defender XDR

Compared 4% of the time

Microsoft Defender for Cloud vs Microsoft Defender XDR

Compared 4% of the time

IBM Security QRadar vs Microsoft Defender XDR

Compared 2% of the time

More Microsoft Defender XDR Competitors

Wazuh vs Stellar Cyber Open XDR

Compared 8% of the time

Sentinel vs Stellar Cyber Open XDR

Compared 5% of the time

Microsoft Sentinel vs Stellar Cyber Open XDR

Compared 4% of the time

SentinelOne Singularity Endpoint vs Stellar Cyber Open XDR

Compared 4% of the time

Exabeam vs Stellar Cyber Open XDR

Compared 3% of the time

More Stellar Cyber Open XDR Competitors

Product Reports

Buyer's Guide

Cortex XDR by Palo Alto Networks

May 2026

Download Cortex XDR by Palo Alto Networks product report

Buyer's Guide

Microsoft Defender XDR

April 2026

Download Microsoft Defender XDR product report

Buyer's Guide

Extended Detection and Response (XDR)

May 2026

Download Stellar Cyber Open XDR product report

Also Known As

Cyvera, Cortex XDR, Palo Alto Networks Traps

Microsoft 365 Defender, Microsoft Threat Protection, MS 365 Defender

No data available

Overview

Cortex XDR by Palo Alto Networks provides advanced threat detection with AI-driven endpoint protection and seamless integration, ensuring multi-layered security and automatic threat response.

Cortex XDR is designed to safeguard endpoints against malware and suspicious activities. It offers advanced threat detection and response capabilities using behavioral analysis, AI, and machine learning. It seamlessly integrates with security infrastructures, providing endpoint security, firewall integration, and enhanced visibility in both cloud-based and on-premises environments.

What are the key features of Cortex XDR?

Advanced Threat Detection: Uses AI and machine learning for proactive threat identification.
Multi-layered Security: Combines various security measures for comprehensive protection.
Endpoint Protection: Safeguards against malware and exploits.
Behavioral Analysis: Monitors suspicious activity for early detection.
Automatic Threat Response: Automates responses to neutralize threats.

What benefits should users expect?

Ease of Use: Simplifies security management with intuitive design.
Resource Efficiency: Minimizes impact on system resources.
Integration Capabilities: Works well with existing security setups.
Reduced Analyst Workload: Automates processes to decrease manual intervention.

Organizations in diverse sectors deploy Cortex XDR to protect against malware, leveraging its advanced threat detection capabilities. Its integration with existing security infrastructures appeals to those seeking comprehensive protection in both cloud and on-premises environments, providing enhanced visibility and threat intelligence.

Palo Alto Networks

Microsoft Defender XDR is a comprehensive security solution designed to protect against threats in the Microsoft 365 environment.

It offers robust security measures, comprehensive threat detection capabilities, and an efficient incident response system. With seamless integration with other Microsoft products and a user-friendly interface, it simplifies security management tasks.

Users have found it effective in detecting and preventing various types of attacks, such as phishing attempts, malware infections, and data breaches.

Watch the Microsoft demo video here: Microsoft Defender XDR demo video.

Microsoft

Stellar Cyber Open XDR delivers an advanced, unified security solution designed for real-time threat detection and intelligent response, reducing complexity by integrating multiple tools into a single interface.

Stellar Cyber Open XDR aggregates security data from many sources to provide comprehensive threat detection and response capabilities. It offers a streamlined, user-friendly experience, allowing teams to efficiently manage incidents. By automating routine security tasks, it enhances operational efficiency and increases visibility across the entire network infrastructure.

What are the key features of Stellar Cyber Open XDR?

Open Integration: Connects with existing security tools for seamless data aggregation and correlation.
AI-Powered Analytics: Uses artificial intelligence to predict, detect, and respond to threats with high accuracy.
Automated Incident Response: Accelerates the fighting-back process through intelligent automation.
Comprehensive Dashboards: Offers clear visibility into security metrics through customizable dashboards.

What benefits or ROI should users expect?

Improved Threat Detection: Recognizes threats faster, allowing quick response to reduce potential damage.
Increased Efficiency: Reduces manual work by automating repetitive tasks, saving time for IT teams.
Cost Reduction: Consolidates security tools, decreasing overall expenditure on multiple solutions.
Enhanced Collaboration: Allows diverse security teams to work together more effectively with shared insights.

Stellar Cyber Open XDR is implemented across various industries, including finance, healthcare, and retail, offering tailored security strategies suited to industry-specific challenges. Organizations can take advantage of this integrated approach to align security operations with industry regulations efficiently.

Stellar Cyber

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

Buyer's Guide

Microsoft Defender XDR vs. Stellar Cyber Open XDR

April 2026

Free Report: Microsoft Defender XDR vs. Stellar Cyber Open XDR

Find out what your peers are saying about Microsoft Defender XDR vs. Stellar Cyber Open XDR and other solutions. Updated: April 2026.

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