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Microsoft Defender XDR vs Stellar Cyber Open XDR comparison

 

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

Microsoft Defender XDR
Ranking in Endpoint Detection and Response (EDR)
7th
Ranking in Extended Detection and Response (XDR)
3rd
Average Rating
8.4
Reviews Sentiment
7.1
Number of Reviews
106
Ranking in other categories
Microsoft Security Suite (5th)
Stellar Cyber Open XDR
Ranking in Endpoint Detection and Response (EDR)
58th
Ranking in Extended Detection and Response (XDR)
35th
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) (24th), Network Traffic Analysis (NTA) (19th), Security Orchestration Automation and Response (SOAR) (24th), Network Detection and Response (NDR) (20th), Identity Threat Detection and Response (ITDR) (19th)
 

Mindshare comparison

As of January 2026, in the Extended Detection and Response (XDR) category, the mindshare of Microsoft Defender XDR is 4.9%, down from 6.8% 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) Market Share Distribution
ProductMarket Share (%)
Microsoft Defender XDR4.9%
Stellar Cyber Open XDR2.1%
Other93.0%
Extended Detection and Response (XDR)
 

Featured Reviews

KO
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.
JC
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.

Quotes from Members

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

Pros

"We are connected to Microsoft and have every laptop enrolled. This acts as an endpoint. The tool helps me check security and compliance. I can also check what a device is doing."
"Scanning, vulnerability reporting, and the dashboard are the most valuable features."
"It reduces the risk of users accidentally clicking on phishing emails."
"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."
"The incident threat response and its ability to facilitate effective remediation against threats are the standout features."
"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."
"Microsoft Defender XDR provides strong identity protection with comprehensive insights into risky user behavior and potential indicators of compromise."
"The ability to isolate and address viruses is the most valuable feature of Microsoft Defender XDR."
"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 mobile app support for Android and iOS is difficult and needs improvement."
"The management features could be improved, particularly in terms of better integration with Intune, Microsoft's cloud-based management solution."
"The price could be better. It'll also help if they can continuously update and upgrade the solution. Every day there's a new virus uploaded into the network, and we have to keep updating it to identify all these things."
"One of the biggest downsides of Microsoft products, in general, is that the menus are often difficult to find, as they tend to move from place to place between versions."
"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."
"Defender also lacks automated detection and response. You need to resolve issues manually. You can manage multiple Microsoft security products from a single portal, and all your security recommendations are in one place. It's easy to understand and manage. However, I wouldn't say Defender is a single pane of glass. You still need to switch between all of the available Microsoft tools. You can see all the alerts in one panel, but you can't automate remediation."
"Automated playbooks and automated dashboards would be preferable to the way the data is currently being presented."
"The documentation on their website is somewhat outdated and doesn't show properly. I wanted to try a query in Microsoft Defender 365. When I opened the related documentation from the security blog on the Microsoft website, the figures were not showing. It was difficult to understand the article without having the figures. The figures were there in the article, but they were not getting loaded, which made the article obsolete."
"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

"Sometimes 365 Defender is expensive, but it can be moderate, depending on the organization's size and the license type. We're satisfied with the cost because it gives us a product that protects our entire environment with DLP. To compromise some cost, of course, we are to complete the most secure environment."
"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."
"They have moved from a licensing model to pay-per-use... The question is: What happens if, for any reason, there's not enough budget to accept this model? That could be a great problem."
"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."
"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."
"On average, we pay around 55 euros per user for the services and features we receive."
"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’s a single license platform."
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Top Industries

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

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business47
Midsize Enterprise25
Large Enterprise38
No data available
 

Questions from the Community

What do you like most about Microsoft 365 Defender?
Microsoft Defender XDR provides strong identity protection with comprehensive insights into risky user behavior and potential indicators of compromise.
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, which is very straightforward for us. We also purchase the uplift for our mobile us...
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 would be beneficial to have easier access. While she can use the web portal, the e...
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 functionalities at a significantly lower cost than rival products, enabling me to...
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 improvement as of now. Their support is good, and the team is small, enabling them to ca...
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, especially for customers with large and medium networks. It eliminates the need for a d...
 

Also Known As

Microsoft 365 Defender, Microsoft Threat Protection, MS 365 Defender
No data available
 

Overview

 

Sample Customers

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: December 2025.
881,282 professionals have used our research since 2012.