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Corelight Open NDR vs Trend Micro Deep Discovery [EOL] comparison

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Comparison Buyer's Guide

Executive SummaryUpdated on Apr 22, 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
7.0
Corelight Open NDR provides cost-effective, enhanced visibility and ROI through strategic pricing, on-premises hosting, and competitive partnerships.
Sentiment score
6.1
Trend Micro Deep Discovery offers mixed financial results but increases security with threat visibility, sandbox, and IDS enhancements.
Corelight Investigator is sold as a software as a service license, and sensors are of course a one-time fee with their hardware maintenance.
Growth And Strategy Lead at a computer software company with 51-200 employees
I believe I have seen a return on my investment with Corelight Open NDR.
Principle Security Architect at Eversource Energy
 

Customer Service

Sentiment score
7.1
Corelight Open NDR's customer service is praised for responsiveness and expertise, despite occasional reports of poor service quality.
Sentiment score
6.5
Trend Micro Deep Discovery support receives mixed reviews; some praise responsiveness, while others cite slow service and accountability issues.
I would probably say we are at an eight or nine as far as the quality of support, which I think is very reasonable.
Growth And Strategy Lead at a computer software company with 51-200 employees
Corelight support was very helpful in showing me some tool sets they have under the covers that allow me to automate that process.
Principle Security Architect at Eversource Energy
If I were to rate them from 0 to 10, I would give them a nine or a ten.
Senior IT Security Engineer at a financial services firm with 5,001-10,000 employees
There is no dedicated team in India for giving support for Trend Micro Deep Discovery.
Director at Business Automation Indore Private Limited
 

Scalability Issues

Sentiment score
7.2
Corelight Open NDR offers scalable, flexible sensor solutions for diverse businesses, simplifying network traffic management and expansion, especially in Kubernetes.
Sentiment score
7.5
Trend Micro Deep Discovery [EOL] provides scalable cloud management, effectively serving enterprises, government, and financial sectors, despite network limitations.
With Investigator itself, Corelight Open NDR is very easy to scale and manage as a business changes.
Growth And Strategy Lead at a computer software company with 51-200 employees
If the appliance supports scalability, Trend Micro support will inform us, and we can implement it without replacing the hardware.
Senior IT Security Engineer at a financial services firm with 5,001-10,000 employees
 

Stability Issues

Sentiment score
8.4
Corelight Open NDR offers reliability and stability, leveraging Zeek technology and effective fleet management for consistent performance.
Sentiment score
8.3
Trend Micro Deep Discovery is stable and reliable, scoring high in user ratings with consistent performance and valuable support.
I cannot think of any time we have had a serious disruption to anything we have been doing due to some technical issue on their side.
Growth And Strategy Lead at a computer software company with 51-200 employees
Corelight Open NDR has been very stable as a solution.
Principle Security Architect at Eversource Energy
The product updates and security updates are kept current, allowing us seamless integration with Trend Micro and getting daily updates and signatures without problems.
Senior IT Security Engineer at a financial services firm with 5,001-10,000 employees
 

Room For Improvement

Corelight Open NDR users desire an interactive interface, better customer support, simplified querying, enhanced documentation, and more transparent pricing.
Trend Micro Deep Discovery faces challenges with integration, scalability, support, pricing, and requires improvements in usability and network capabilities.
Corelight has done a really good job of making sure that everything is explainable and everything is mapped when it comes to leveraging any of their artificial intelligence features.
Growth And Strategy Lead at a computer software company with 51-200 employees
I believe what they have done with it, taking an open-source engine and bundling it into an appliance with professional support, was a brilliant idea.
Principle Security Architect at Eversource Energy
We have multiple components such as Deep Discovery Email Inspector for mail gateways, Deep Discovery Analyzer for sandboxing, and Deep Discovery Inspector, which serves as an IDS detecting malicious network traffic.
Senior IT Security Engineer at a financial services firm with 5,001-10,000 employees
The solution is not scalable as it is an agent product rather than a product designed for scalability.
Owner at Darcom
There is no dedicated team in India for giving support for Trend Micro Deep Discovery.
Director at Business Automation Indore Private Limited
 

Setup Cost

Corelight Open NDR's pricing is mixed, with affordable options for experts but costly for new adopters, despite communication issues.
Trend Micro Deep Discovery [EOL] pricing is annual, node-based, varies by requirements, and opinions differ on its competitiveness.
Corelight Investigator is sold as a software as a service license, and sensors are of course a one-time fee with their hardware maintenance.
Growth And Strategy Lead at a computer software company with 51-200 employees
I do not consider it an expensive tool; its price is justified based on the capabilities that we receive when compared to another mail gateway or other vendors.
Senior IT Security Engineer at a financial services firm with 5,001-10,000 employees
The solution is very expensive.
Owner at Darcom
Overall, the licensing cost of Trend Micro Deep Discovery was not on the higher side earlier, but now, since the competition has increased, we need to think about the prices.
Director at Business Automation Indore Private Limited
 

Valuable Features

Corelight Open NDR provides cost-effective, efficient network threat detection and management with machine learning to reduce alert fatigue.
Trend Micro Deep Discovery provides real-time threat detection, seamless integration, scalability, and user-friendly interface for comprehensive network protection.
The benefits include visibility, as the Suricata engine can scan huge volumes of traffic.
Principle Security Architect at Eversource Energy
Corelight Open NDR is a really powerful platform. Pairing up the sensors with Investigator, you are getting incredibly rich data, which we are also able to further enrich with additional feeds such as CrowdStrike or CISAIAS.
Growth And Strategy Lead at a computer software company with 51-200 employees
The most valuable capabilities of Trend Micro Deep Discovery Email Inspector include its ability to perform mail detection and mail filtration against various email attacks such as phishing and spam, serving as an email gateway for both inbound and outbound traffic.
Senior IT Security Engineer at a financial services firm with 5,001-10,000 employees
This solution allows us to see anomalies, network traffic in our network, and zero-day threats.
Owner at Darcom
The impact of the Threat Intelligence Sharing feature on overall defense and security is positive.
Director at Business Automation Indore Private Limited
 

Categories and Ranking

Corelight Open NDR
Average Rating
8.8
Reviews Sentiment
7.2
Number of Reviews
7
Ranking in other categories
Intrusion Detection and Prevention Software (IDPS) (19th), Network Traffic Analysis (NTA) (4th), Network Detection and Response (NDR) (6th), AI-Powered Cybersecurity Platforms (12th)
Trend Micro Deep Discovery ...
Average Rating
8.4
Reviews Sentiment
6.8
Number of Reviews
29
Ranking in other categories
No ranking in other categories
 

Featured Reviews

reviewer2834367 - PeerSpot reviewer
Growth And Strategy Lead at a computer software company with 51-200 employees
Network visibility has transformed how we detect nation state threats and protect critical industry
Before Corelight recently started pushing some of the agentic features, querying at times could be a little difficult, depending on your mastery of log scale. However, I think with a lot of the artificial intelligence that they are building in, it is getting a lot easier to query in the platform. I would definitely encourage them to continue down that path where anybody can hop into the platform and start running queries, whether it is a simple instruction like I want this, and an artificial intelligence process can actually build the query and do it. I think that would be super powerful. Cyber skill sets are in high demand, and there is a huge backlog in cyber talent. We cannot fill all the positions we need. The easier we can make these cyber systems for people to pick up and be effective on, I think is really key. Explainability of data is hyper important. In the past few artificial intelligence related updates we have gotten from Corelight, that has been one of the first questions our team has asked every time or that I have asked: show me what the model is doing, show me how it came to this analysis. Within Investigator platform, they are able to walk through and see exactly what data the artificial intelligence pulled from where and why it did what it did as far as making its suggestions. They have definitely built their system with artificial intelligence in mind up front, and having that openness as one of the key features of any of their artificial intelligence and machine learning processes in the platform is important. The issue with black boxes is obviously hallucinations from artificial intelligence and just not being able to trace to ground truth. When we are talking about these cyber incidents and being able to do forensics, you need to be able to pinpoint and tie everything together, and black boxes really obscure that and prevent you from doing so. Corelight has done a really good job of making sure that everything is explainable and everything is mapped when it comes to leveraging any of their artificial intelligence features.
RJ
Director at Business Automation Indore Private Limited
Long-term threat visibility has reduced customer incidents and supports steady recurring revenue
The real-time visibility on network traffic provided by Trend Micro Deep Discovery is good, and my customer is satisfied. My customers have indeed utilized the Threat Intelligence Sharing feature of Trend Micro Deep Discovery. The impact of the Threat Intelligence Sharing feature on overall defense and security is positive. The benefit that Deep Discovery brings to our organization is that we get fewer calls from customers, allowing me to focus on other businesses, and we receive year-on-year revenue for renewals.
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Top Industries

By visitors reading reviews
Financial Services Firm
11%
Government
8%
Real Estate/Law Firm
8%
Computer Software Company
7%
Outsourcing Company
11%
Construction Company
9%
Financial Services Firm
8%
Comms Service Provider
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business5
Midsize Enterprise3
Large Enterprise3
By reviewers
Company SizeCount
Small Business14
Midsize Enterprise7
Large Enterprise11
 

Questions from the Community

What is your experience regarding pricing and costs for Corelight?
I have a fortunate experience with pricing, setup costs, and licensing of Corelight Open NDR, as being a principal architect, I get to sit outside of that conversation and just choose the best prod...
What needs improvement with Corelight?
Corelight Open NDR does not need any improvements or additional features in the next releases. The product is excellent at what it does, and I believe what they have done with it, taking an open-so...
What is your primary use case for Corelight?
I have been using Corelight Open NDR solution for approximately three years. I leverage the Suricata engine heavily for alerting on indicators of compromise as my main use case for this solution.
What needs improvement with Trend Micro Deep Discovery?
Server Protect is not commonly used. When considering the Sandbox feature, it only inspects small files, and not all types of files are supported. The solution is very expensive. The solution is no...
What is your primary use case for Trend Micro Deep Discovery?
I am working with Microsoft solutions, specializing in cyber security. I work with XDR, Apex One, Apex Central, Deep Security, Deep Discovery Inspector, and Deep Discovery Analyzer for monitoring t...
 

Also Known As

Corelight Open NDR
Trend Micro Deep Discovery Inspector, Trend Micro Deep Discovery Analyzer
 

Overview

 

Sample Customers

CarrefourEdnonGrand Canyon EducationSektorCERTTietoevryVolkswagen Financial Services
Allied Telesis, Atma Jaya Catholic University of Indonesia, Babou, Blekinge County Council, Delacour, Hiroshima Prefectural Government, Live Nation Entertainment Inc., Mazda Motor Logistics Europe, McGill University Health Centre, Mikuni Corporation, OKWAVE, Sinar Mas Land, SWICA, UTOC Corporation
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