No more typing reviews! Try our Samantha, our new voice AI agent.

LMNTRIX Active Defense vs UnderDefense comparison

Why PeerSpot?
 

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:
 

ROI

Sentiment score
7.2
LMNTRIX Active Defense provides cost-effective, essential SOC services, offering significant network protection, especially in critical sectors, despite difficult ROI quantification.
Sentiment score
8.0
Users saved time with detailed alerts, improving productivity and focus on development, security, and customer engagement.
Each alert comes with the caller, the endpoint, and the queries, so we do not dig through logs.
Internet Marketing Manager at a tech vendor with 51-200 employees
Log triage no longer takes up our security team's calendar, allowing those hours to go into platform architecture, our DRM protections, and proactive hardening.
SEO And Outreach Specialist at a tech vendor with 11-50 employees
I have seen a return on investment, mainly in time and not having to build a team, as we did not need to hire a security team to get around-the-clock cloud coverage.
BD with 10,001+ employees
 

Customer Service

Sentiment score
9.0
LMNTRIX Active Defense is praised for outstanding customer service, fast assistance, dedicated support, and effective incident management.
Sentiment score
9.5
UnderDefense's customer service earns high ratings for exceptional responsiveness, clear communication, and quick assistance, achieving perfect satisfaction scores.
I would rate the customer support on a scale of 1 to 10 as 10.
Founder at Urlicer
The customer support has been responsive and helpful.
Internet Marketing Manager at a tech vendor with 51-200 employees
When we needed a baseline adjusted or a finding explained, we got a clear answer quickly.
SEO And Outreach Specialist at a tech vendor with 11-50 employees
 

Scalability Issues

Sentiment score
8.8
LMNTRIX Active Defense scales easily, smoothly handling multi-environment expansions while users confidently enter long-term contracts for seamless coverage.
Sentiment score
8.5
UnderDefense seamlessly manages high-traffic and dynamic environments, ensuring reliable coverage amidst increasing customer and endpoint volumes.
As our endpoints and customers grow, the same coverage applies, so we expect it to keep up.
Internet Marketing Manager at a tech vendor with 51-200 employees
UnderDefense's scalability is good, as the same coverage applies as our cloud environment grows without us changing anything on our side.
BD with 10,001+ employees
Our platform sees sharp spikes from bulk uploads and fast-spreading assets, and UnderDefense Agentic AI SOC handles them without needing us to resize or retune anything.
SEO And Outreach Specialist at a tech vendor with 11-50 employees
 

Stability Issues

Sentiment score
8.6
LMNTRIX Active Defense is reliable and innovative, allowing detect mode operation for threat detection and whitelisting before protection.
Sentiment score
9.1
UnderDefense is praised for its stability, consistently providing reliable performance even during high traffic and stress scenarios.
We use it every day and it has run steadily, including when our traffic is high.
Internet Marketing Manager at a tech vendor with 51-200 employees
 

Room For Improvement

LMNTRIX Active Defense portal faces integration issues, limited MFA options, and demands for simpler dashboard and additional features.
Focus on including internal identifiers in alerts and onboarding templates to improve user experience and reduce setup time.
It is worth it for accurate triage later, but a template for common upload patterns will shorten that time.
SEO And Outreach Specialist at a tech vendor with 11-50 employees
The setup and daily use have both been smooth.
BD with 10,001+ employees
The customer name in the alert is the only thing needed in terms of improvements.
Internet Marketing Manager at a tech vendor with 51-200 employees
 

Setup Cost

LMNTRIX Active Defense offers competitive pricing at under $20 per user annually, praised for its value and advanced protection.
Users find UnderDefense cost-effective, easy to set up, and transparently priced, offering great value compared to in-house solutions.
licensing was clear from the start, giving me good value for the price
Founder at Urlicer
Compared with building the same coverage in-house, it is a much lower cost and did not require us to hire.
SEO And Outreach Specialist at a tech vendor with 11-50 employees
Pricing was fair for what we get, setup was easy and took very little of our time, and the licensing was clear from the start, enabling us to see good value for the price.
BD with 10,001+ employees
 

Valuable Features

LMNTRIX Active Defense excels in reducing false positives, offering fast response times, and providing effective, user-friendly, cost-efficient cybersecurity.
UnderDefense offers anomaly detection, noise filtering, proactive reporting, 24/7 support, AI accuracy, governance, and efficient alert triage.
The sorting signals and clear reports help my team day-to-day because 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.
BD with 10,001+ employees
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.
Founder at Urlicer
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.
SEO And Outreach Specialist at a tech vendor with 11-50 employees
 

Categories and Ranking

LMNTRIX Active Defense
Ranking in Managed Detection and Response (MDR)
41st
Average Rating
9.8
Reviews Sentiment
8.0
Number of Reviews
5
Ranking in other categories
Threat Deception Platforms (15th)
UnderDefense
Ranking in Managed Detection and Response (MDR)
10th
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), Extended Detection and Response (XDR) (15th), Compliance Management (10th), AI-SOC (8th), AI-Powered Security Automation (4th)
 

Mindshare comparison

As of November 2026, in the Managed Detection and Response (MDR) category, the mindshare of LMNTRIX Active Defense is 0.9%, up from 0.6% compared to the previous year. The mindshare of UnderDefense is 0.8%, up from 0.1% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Managed Detection and Response (MDR) Mindshare Distribution
ProductMindshare (%)
UnderDefense0.8%
LMNTRIX Active Defense0.9%
Other98.3%
Managed Detection and Response (MDR)
 

Featured Reviews

EQ
Chief Information Officer at The C&S Companies
It gives us fantastic information about the security of our environment
The dashboard can seem overwhelming at times. It's fairly simple for the end user, and we don't need to do much to make it work, but the dashboard makes it seem a little more complicated than it actually is. There could also be more guidance on how to set up playbooks.
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.
report
Use our free recommendation engine to learn which Managed Detection and Response (MDR) solutions are best for your needs.
921,523 professionals have used our research since 2012.
 

Top Industries

By visitors reading reviews
Construction Company
19%
Financial Services Firm
16%
Outsourcing Company
8%
Manufacturing Company
6%
Manufacturing Company
39%
Construction Company
13%
Security Firm
11%
Outsourcing Company
9%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
No data available
No data available
 

Questions from the Community

Ask a question
Earn 20 points
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 a large database of creator data that customers search and export, so the bigges...
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 coverage in-house, it is a much lower cost and did not require us to hire. The ...
What needs improvement with UnderDefense?
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. It is worth it for accurate triage later, ...
 

Interactive Demo

Demo not available
 

Overview

 

Sample Customers

Alliance Funding Group (AFG) - USA Kestrel Coal - Australia Success Resources - Malaysia
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.
921,523 professionals have used our research since 2012.