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 8.4, while Stellar Cyber is ranked #35. Microsoft holds a 4.9% mindshare in XDR, compared to Stellar Cyber’s 2.0% 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: February 2026).

Buyer's Guide

Microsoft Defender XDR vs. Stellar Cyber Open XDR

February 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 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) Market Share Distribution
Product	Market Share (%)
Microsoft Defender XDR	4.9%
Cortex XDR by Palo Alto Networks	4.9%
Stellar Cyber Open XDR	2.0%
Other	88.2%

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.

Read full review

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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Jeevan Chandran

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.

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

"From a single pane of glass, you can easily manage all of your endpoints."

"The user interface of the solution is sophisticated and straightforward."

"The positive impacts I see from Cortex XDR by Palo Alto Networks include a complete 360-degree view of our security posture altogether, being a uniform platform where we are ingesting logs from multiple resources."

"Cortex XDR by Palo Alto Networks is easy to use and does not consume a lot of hardware resources."

"Stability is a primary factor, and then there's the ease of distribution and policy management."

"Cortex XDR is a very capable solution for protecting large networks and a lot of endpoints. It's very useful because the automation is very high, and if you combine it with the features on Palo Alto firewalls, it provides very strong protection."

"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."

"The most valuable feature is that you can select remote access of any machine for sandboxing."

More Cortex XDR by Palo Alto Networks pros

"The stability has been great."

"Vulnerability assessment and just-in-time access are some valuable features of Defender for server plans."

"The email protection feature is the most valuable because our risks primarily lie there, and it seems to be the most popular target."

"You can configure the product very easily."

"I like how Microsoft XDR and the other Microsoft products are integrated into a single unified security stack covering identity access management, endpoint protection, email, cloud applications, etc."

"The most valuable features are machine learning, AI, and auto-remediation of none malicious alerts."

"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."

"It has been great for us. Previously, we didn't have a solution to protect us, especially from malware, whereas now, we are getting protection up front, especially from the malware attacks coming through emails or endpoints."

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

"A little bit more automation would be nice."

"I think sometimes Cortex XDR agent automatically stops event capturing from the device, and then even the dashboard does not get any notifications from the agent."

"We have found that there are times Cortex XDR by Palo Alto Networks does not detect some of the viruses, we have to use another protection solution called Kaspersky."

"I recommend adding a data loss prevention (DLP) solution to Cortex XDR by Palo Alto Networks. The inclusion of this feature would allow the application of DLP policies alongside antivirus policies via a single agent and console, making it more competitive as other OEMs often offer DLP solutions as part of their antivirus products."

"Cortex XDR could be improved with more GUI features."

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

"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."

"Dashboards do not allow everyone to see what's happening."

More Cortex XDR by Palo Alto Networks cons

"The automation response being slow is the main concern; when an incident occurs or if I run a remediation, it takes significant time to complete the remediation."

"The AI could be improved. As an analyst, I want to be able to interact more with AI. The AI simply sends summaries. I can't ask it, for example, if it has seen any suspicious activity with device two. I have to go and check device two for myself."

"My client would like the solution to be more customizable without using code. You can only build on the default console, but we're not allowed to change it."

"There are other SIEM solutions that are easier to use, mainly based on the creation of rules, use cases, and groups."

"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."

"The solution does not offer a unified response and standard data."

"I haven't really come across the incident Q assistant helping improve the efficiency of my SOC workflow."

"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."

More Microsoft Defender XDR cons

"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

"When we first bought it, it was a bit expensive, but it was worth it. The licensing was straightforward."

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

"Licensing for Palo Alto Networks Cortex XDR can be costly, especially when it comes to a hundred users. A license is required for each user, and the subscription must be renewed on a yearly basis."

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

"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 did PoCs on products called Cylance and CrowdStrike. Although, I consider these products and they were also good, when it come to cost and budgetary factors, Traps has been proven to be better than the other two products. It is quite cost-effective and delivers all the entire solution which we require."

"The price of the product is not very economical."

"Cortex XDR’s pricing is very reasonable."

More Cortex XDR by Palo Alto Networks pricing and cost advice

"The product is fairly priced for what we get from it."

"The license cost for a year is approximately forty-four thousand, and this annual saving is a significant factor in our decision to switch."

"With the little idea I have about the costs, I can say that XDR tools tend to be a bit expensive. If you are using Microsoft Defender XDR, then you need to go for a subscription-based pricing model."

"There are no issues with pricing, but sometimes, the clarity in licensing is a concern."

"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."

"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."

"The solution is too expensive."

"Microsoft Defender XDR is priced high."

More Microsoft Defender XDR pricing and cost advice

"It’s a single license platform."

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Top Industries

By visitors reading reviews

Computer Software Company

10%

Financial Services Firm

Manufacturing Company

Government

Computer Software Company

12%

Financial Services Firm

Manufacturing Company

Comms Service Provider

Manufacturing Company

13%

Comms Service Provider

10%

Computer Software Company

Government

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

By reviewers
Company Size	Count
Small Business	44
Midsize Enterprise	20
Large Enterprise	47

By reviewers
Company Size	Count
Small Business	46
Midsize Enterprise	26
Large Enterprise	38

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. ...

See all answers

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 pricing, setup, costs, and licensing of Microsoft Defender XDR is tied to our E5 subscription, whi...

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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...

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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 Complete vs Cortex XDR by Palo Alto Networks

Compared 6% of the time

CrowdStrike Falcon vs Cortex XDR by Palo Alto Networks

Compared 5% of the time

Cortex XSIAM vs Cortex XDR by Palo Alto Networks

Compared 4% of the time

Qualys Context XDR vs Cortex XDR by Palo Alto Networks

Compared 2% of the time

More Cortex XDR by Palo Alto Networks Competitors

CrowdStrike Falcon vs Microsoft Defender XDR

Compared 12% of the time

Wazuh vs Microsoft Defender XDR

Compared 7% of the time

Microsoft Defender for Cloud vs Microsoft Defender XDR

Compared 5% of the time

SentinelOne Singularity Complete vs Microsoft Defender XDR

Compared 4% of the time

Huntress Managed EDR vs Microsoft Defender XDR

Compared 2% of the time

More Microsoft Defender XDR Competitors

Wazuh vs Stellar Cyber Open XDR

Compared 9% of the time

Sentinel vs Stellar Cyber Open XDR

Compared 6% of the time

Microsoft Sentinel vs Stellar Cyber Open XDR

Compared 4% of the time

SentinelOne Singularity Complete vs Stellar Cyber Open XDR

Compared 4% of the time

Lumu 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

February 2026

Download Cortex XDR by Palo Alto Networks product report

Buyer's Guide

Microsoft Defender XDR

February 2026

Download Microsoft Defender XDR product report

Buyer's Guide

Extended Detection and Response (XDR)

February 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

February 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: February 2026.

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