Microsoft Defender XDR vs Stellar Cyber Open XDR comparison

Microsoft Defender XDR vs. Stellar Cyber Open XDR

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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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Kalpesh Pawar

Technical Head Cloud Services at Softcell Technologies Limited

Unified threat visibility has reduced alert fatigue and improves incident response speed

From my perspective, Microsoft Defender XDR can be improved in several areas. Better tuning granularity for alert noise is needed because it still requires effort to reduce false positives in large environments. More flexible or custom automation playbooks beyond the built-in AIR for complex or specific workflows would be helpful. Additionally, improved cross-tenant visibility and reporting for MSP-style environments managing multiple customers are necessary improvements. A couple of day-to-day improvements for Microsoft Defender XDR include limited third-party integration. Although the APIs exist, deeper native integrations with SIEM, SOAR, or non-Microsoft tools need more flexibility and bi-directional workflows. Additionally, the UI can become heavy during investigation because context switching between blades and slower query performance on large datasets impacts analyst efficiency.

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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

"It blocks malicious files. It prevents attacks. It doesn't require many updates, it's a very light application."

"This software helps us understand any issues that may arise when someone is not at work."

"Cortex XDR by Palo Alto Networks saves time in various ways, although the user interface is fairly standard."

"We have a complete overview of all our PCs and it's very easy to handle and to use the interface."

"We think that this product will help us grow, as it meets our needs currently and we can grow with it over time."

"Cortex is the best solution for avoiding security breaches, malware attacks, and other kinds of security issues."

"One of the main benefits of the solution is its intelligence to correlate the events into an incident."

"The stability of the solution is very good. We have about 100 users on it right now, and we use it twice a week."

More Cortex XDR by Palo Alto Networks pros

"The most valuable aspect is undoubtedly the exploration capability"

"Overall, the comprehensiveness of the threat protection is at 95 percent."

"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 is scalable."

"The most valuable feature of the solution stems from the fact that Microsoft Defender XDR is easy to integrate with other Microsoft platforms or products."

"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 EDR features are valuable. By getting the EDR features, we have more control over the device. We have information about events in real-time and more protection against zero-day threats and zero-day vulnerabilities. We can monitor every event or action that a device is going through. We can get an idea if it is something malicious or if we have to take any actions."

"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."

More Microsoft Defender XDR pros

"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

"Impact on system performance is horrible, adding a lot of delays for users."

"The dashboard is the area that needs to improve so that we can have the ability to drill down without having to go elsewhere to verify results."

"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."

"It is a complex solution to implement."

"In general, the price could be more competitive."

"It takes time to scan the servers and devices."

"The product's pricing could be better."

"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."

More Cortex XDR by Palo Alto Networks cons

"The support from Microsoft could improve. There are times I have to wait for a response from a qualified specialist."

"For Microsoft Defender XDR, there is currently no ability to reset passwords for on-premises accounts, which is a key challenge."

"For some scenarios, it provides good visibility into threats, and for some scenarios, it doesn't. For example, sometimes the URLs within the emails have destinations, and you do get a screenshot and all further details, but it's not always the case. It would be good if they did a better job of enabling that for all the emails that they identified as malicious. When you get an email threat, you can go into the email and see more details, but the URL destination feature doesn't always show you a screenshot of the URL in that email. It also doesn't always give you the characteristics relating to that URL. It would be quite good if the information is complete where it says that we identified this URL, and this is what it looks like. There should be some threat intel about it. It should give you more details."

"There could be a way to proactively monitor unusual activity ."

"The data recovery and backup could be improved."

"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."

"Improving scalability, especially for very large tenants, could be beneficial for Microsoft Defender XDR."

"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."

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

"I don't like that they have different types of licenses."

"Cortex XDR's pricing is ok."

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

"The pricing is a little bit on the expensive side."

"Our customers have expressed that the price is high."

"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."

"The price is on the higher side, but it's okay."

"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."

More Cortex XDR by Palo Alto Networks pricing and cost advice

"I would like to have more security features in the lower licenses because not every customer is able to buy E5 licenses. The bundling isn't always easy for our customers to understand. Compared to other tools, it's a good price."

"Microsoft should provide lower-level licensing options. They should do it in such a way that even an individual could purchase a license, and it should be entirely flexible."

"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."

"We have a lot of problems in Latin America regarding the price of Microsoft 365 Defender, because the relationship between dollars and the money of the different countries, it's is a lot. Many customers that have small businesses say that they would like the solution but it is too expensive. However, large companies do not find the cost an issue."

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

"It is 15 dollars per server per month. It is worth it, but it can be costly. It depends on the company's size."

"All I can say again is the E5 gives you all the capabilities that it offers. It also gives Office 365 and one terabyte of storage. All in all, the E5 license model makes sense. There are some people who say it's quite costly, but rather than paying different vendors, it makes sense to go all in with Microsoft if you've got that licensing. From that perspective, it's cost-effective, but I can't comment much on that."

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

More Microsoft Defender XDR pricing and cost advice

"It’s a single license platform."

See which vendors are best for you

Use our free recommendation engine to learn which Extended Detection and Response (XDR) solutions are best for your needs.

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892,868 professionals have used our research since 2012.

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	45
Midsize Enterprise	21
Large Enterprise	48

By reviewers
Company Size	Count
Small Business	46
Midsize Enterprise	28
Large Enterprise	40

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...

Microsoft Defender for Endpoint vs Cortex XDR by Palo Alto Networks

Comparisons

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

Darktrace 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 5% 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

Cortex XDR by Palo Alto Networks

May 2026

Download Cortex XDR by Palo Alto Networks product report

Microsoft Defender XDR

Download Microsoft Defender XDR product report

Extended Detection and Response (XDR)

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

Microsoft Defender XDR vs. Stellar Cyber Open XDR