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ReliaQuest GreyMatter vs UnderDefense comparison

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Comparison Buyer's Guide

Executive SummaryUpdated on Nov 8, 2026

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...
Sponsored
Ranking in Extended Detection and Response (XDR)
3rd
Average Rating
8.6
Reviews Sentiment
6.7
Number of Reviews
122
Ranking in other categories
Endpoint Protection Platform (EPP) (4th), Endpoint Detection and Response (EDR) (5th), Ransomware Protection (2nd), AI-Powered Cybersecurity Platforms (1st)
ReliaQuest GreyMatter
Ranking in Extended Detection and Response (XDR)
32nd
Average Rating
9.0
Reviews Sentiment
7.1
Number of Reviews
3
Ranking in other categories
Digital Risk Protection (11th), Managed Detection and Response (MDR) (19th)
UnderDefense
Ranking in Extended Detection and Response (XDR)
15th
Average Rating
10.0
Reviews Sentiment
7.2
Number of Reviews
5
Ranking in other categories
Endpoint Detection and Response (EDR) (22nd), Security Orchestration Automation and Response (SOAR) (10th), SOC as a Service (4th), Managed Detection and Response (MDR) (10th), Compliance Management (10th), AI-SOC (8th), AI-Powered Security Automation (4th)
 

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.
Omkar Korulkar - PeerSpot reviewer
Technology Analyst at a tech vendor with 10,001+ employees
Centralized visibility has improved SOC investigations and supports faster, more accurate incident response
I think ReliaQuest GreyMatter could be improved further in a few areas. First, I want to see more flexibility in dashboard customization so analysts can configure views based on their roles and investigation requirements. Second, improving alert correlation accuracy and reducing overall false positive rates would help analysts focus on genuine possible threats rather than spending time validating repetitive low-priority alerts or false positives. Third, more detailed investigation timelines, better reporting capabilities, and simpler investigation integration configuration would make the platform more effective. I suggest continuously improving automation workflows to reduce repetitive manual tasks while allowing analysts to maintain control over critical response actions. Overall, I think these enhancements can make the platform more user-friendly and improve the efficiency of SOC operations. One additional improvement would be enhancing the investigation experience by providing more detailed context directly within the alert. For example, having a clear incident timeline, related alerts, historical activity, and threat intelligence information available in one place would make investigations easier. I believe these improvements would make day-to-day SOC operations smoother and allow analysts to focus more on proactive threat hunting and other complex investigations.
Ivan Voitovych - PeerSpot reviewer
Founder at Urlicer
AI-driven SOC triage has transformed threat monitoring and keeps our security work focused
The best features UnderDefense offers include mostly triage in-context signals read together across my stack, where one finding replaces many separate checks. A good thing too is its false positive suppression, as I do not get false notifications. Normal activity such as traffic spikes during customer events is recognized and documented, and only the unusual cases reach me. It has full-time support 24/7 with proactive reports, and monitoring runs around the clock. Reports and alerts come to me without even noticing or asking, so it is very useful. My team sees what happened without having to chase it. I find the proactive reporting and 24/7 support to have definitely made a real difference. Proactive reports mean I hear about what happened without having to ask, so I know the state of things at the start of the day, and 24/7 support matters most for traffic spikes and other events outside busy working hours, as I get an answer when I need one without keeping someone on call just in case, saving me a lot of time. Together, they let my team stay on infrastructure work and step in only when a decision is needed. Regarding UnderDefense's AI capabilities, I think the governance and security is the best there is, as the decisions that matter stay with my team and each finding is documented, allowing me to review afterwards how a conclusion was reached. That control and traceability is what I need from AI in a security role. The accuracy and reliability of UnderDefense's AI output is accurate and steady, as findings have matched what I saw when I checked them, and the pattern assessments are consistent, especially during large traffic events or spikes, which is when I depend on them most. When a case needs judgment, the reasoning is there so I can confirm it myself.

Quotes from Members

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

Pros

"One thing that I like about Cortex XDR by Palo Alto Networks, it is detecting all the suspicious or malicious binaries, and it has integration with Palo Alto Firewall."
"The dashboard is customizable."
"The correlation with the firewall and the creation of policies by areas have facilitated security management in my company by allowing me to create more fine-tuned policies that take into account multiple aspects of the operation, multiple effects, multiple sources, and multiple destinations."
"The most valuable features of this product are the management capabilities, which allow an IT organization to get quite a good picture of attempted cyber attacks, and its out-of-the-box investigation capabilities."
"They have a new GUI which is just fantastic."
"Stability-wise, it is good; I did not hear about any issues in terms of stability, and Cortex XDR by Palo Alto Networks can be trusted completely."
"In one single alert, we are getting the network telemetry, endpoint telemetry, email security telemetry, and proxy telemetry all in one single ticket, making it very easy."
"The most valuable feature of Cortex XDR by Palo Alto Networks is its machine-learning capabilities. Additionally, there is full integration with other solutions."
"One of the best features that ReliaQuest GreyMatter offers is the ability to bring together security tools and data that support threat investigation, detection, and response."
"ReliaQuest GreyMatter saves around 60% of time or resources."
"ReliaQuest GreyMatter has helped us to reduce security incidents by 89%, which is a significant amount of incidents we have seen."
"Routine signals are handled and documented, and only cases that need a human decision reach my team, allowing engineers to spend their time on infrastructure hardening instead of log digging."
"The linking, the filtering, and the readable reasoning each help on their own, but together, they allow a small security team to handle the volume our platform produces without losing sight of the cases that matter."
"UnderDefense groups it into one alert with the caller, the endpoint, and the usual pattern, which allows us to contact the customer the same day with facts in hand."
"UnderDefense Gen AI SOC flags behavior that breaks from an account's own baseline, lays out which signals triggered the alert and why it reads as different from normal activity, and helps our team decide within the same day whether we are seeing a legitimate big campaign push or a compromised login."
"Every morning we look at a short list of cases that matter instead of a long list of raw alerts, and each case comes with the full picture, so we can decide in a few minutes whether it needs action."
 

Cons

"However, if you do not have Palo Alto in your environment, you are paying these additional services just for Cortex XDR by Palo Alto Networks, so it is not a cost-effective solution."
"It's not an ideal choice for smaller businesses, as you need a minimum of 200 endpoints to even use the solution at all."
"I would like to see them include NDR (Network Detection Response). Then it would work well with SIEM Response."
"Cortex XDR by Palo Alto Networks could improve by adding a sandbox feature to better compete with their competitors which have it."
"The solution needs better reports. I think they should let the customer go in and customize the reports."
"They are charging for Network Traffic Analyzer (NTA) services, so if the per GB data could be provided at a certain level free of cost or at the same cost which the customer is taking for the entire bundle, that would be better."
"The onboarding process could be better."
"I don't like that they have different types of licenses. For example, if users select a license, they think they will have all the platforms they need to improve their network or security. But after some time, Palo Alto Networks changed their licensing, and some of the features that, for example, were free at the beginning now have a cost. I think the integration can be improved. For example, a lot of tools are just integrated through APIs."
"Areas that have room for improvement include user interface and integration."
"ReliaQuest GreyMatter is stable to a certain extent, but there is still some room for improvement."
"UnderDefense could improve in onboarding, which takes some dedicated time because the baseline for our high volume upload events needs to be set up first."
 

Pricing and Cost Advice

"It has a yearly renewal."
"The return on investment is from the user side because we have seen the performance of it increase the delivery time of the product if we are using too many web-based and on-premise applications. In indirect ways, we saw the return of investment in terms of performance and user satisfaction increase."
"If one wishes to work with another team or large number of users at a future point, he must purchase a license for them."
"In terms of the cost Cortex XDR by Palo Alto Networks is very expensive because we are a Mexican company and when you translate dollars to pesos the cost is very high. The solution is very expensive for Mexican companies. I understand that they have international prices, but I do not think it offsets the price enough for many companies in countries, such as Mexico. The amount it is reduced is not a massive percentage."
"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."
"It's about $55 per license on a yearly basis."
"It's way too expensive, but security is expensive. You pay for your licensing, and then you pay for someone to monitor the stuff."
"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."
Information not available
Information not available
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Top Industries

By visitors reading reviews
Comms Service Provider
14%
Outsourcing Company
12%
Construction Company
10%
Manufacturing Company
10%
Financial Services Firm
10%
Manufacturing Company
9%
Construction Company
8%
Comms Service Provider
6%
Manufacturing Company
39%
Construction Company
13%
Security Firm
11%
Outsourcing Company
9%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business50
Midsize Enterprise21
Large Enterprise57
No data available
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 needs improvement with ReliaQuest GreyMatter?
Areas that have room for improvement include user interface and integration.
What is your primary use case for ReliaQuest GreyMatter?
I use ReliaQuest GreyMatter for detection and response, XDR, and SIEM. The best features I like about GreyMatter the ...
What is your primary use case for UnderDefense?
Our main use case for UnderDefense Agentic AI SOC is to watch how accounts actually use our platform. Our product is ...
What is your experience regarding pricing and costs for UnderDefense?
The experience with pricing, setup cost, and licensing has been fair for what we get. Compared with building the same...
What needs improvement with UnderDefense?
UnderDefense could improve in onboarding, which takes some dedicated time because the baseline for our high volume up...
 

Also Known As

Cyvera, Cortex XDR, Palo Alto Networks Traps
No data available
No data available
 

Interactive Demo

Demo not available
Demo not available
 

Overview

 

Sample Customers

CBI Health Group, University Honda, VakifBank
Information Not Available
Kyte, Betsson Grourp, Mammut, Accedian.
Find out what your peers are saying about CrowdStrike, SentinelOne, Huntress and others in Managed Detection and Response (MDR). Updated: October 2026.
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