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Trend Micro Deep Discovery [EOL] vs Zscaler Cloud IPS comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Feb 26, 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

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
Zscaler Cloud IPS
Average Rating
9.0
Reviews Sentiment
6.8
Number of Reviews
5
Ranking in other categories
Intrusion Detection and Prevention Software (IDPS) (20th)
 

Featured Reviews

reviewer2266119 - PeerSpot reviewer
Senior IT Security Engineer at a financial services firm with 5,001-10,000 employees
Has improved email security through advanced filtration and timely threat detection
I work with Trend Micro Apex One. I have used the Deep Discovery's Sandbox analysis feature, and we utilize another appliance known as Deep Discovery Analyzer, abbreviated as DDA. This tool makes analysis for URLs and attachments contained in inbound emails, so whenever we receive an email with a URL or attachment, it will be analyzed by Trend Micro Deep Discovery Analyzer. In evaluating Deep Discovery's real-time visibility on network traffic, it is important to note that we applied our Deep Discovery Analyzer for Trend Micro to conduct sandboxing specifically for email channels only, and we do not utilize it for network channels. For network channel sandboxing, we use a solution called FortiAnalyzer, which belongs to another team called network security. I assess Deep Discovery's effectiveness in identifying sophisticated attack patterns by looking at how it handles high traffic loads, and how effectively it can use its instances and images to analyze numerous URLs and attachments simultaneously. Additionally, I evaluate its ability to maintain round-robin or load balancing across different analyses without leaving samples queued for analysis. The performance is critical when the product updates for signatures are up-to-date, as this aids in the detection and classification of URLs and attachments without delay in the analysis process. On a scale of one to ten, I rate Trend Micro Deep Discovery a nine.
Utpal Sinha - PeerSpot reviewer
Sr Network Engineer at Momentive
Stable product with valuable SSL inspection features
We use Zscaler Cloud IPS for threat protection, full SSL inspection, and data center scalability. It integrates with multiple products, including cloud firewalls, cloud sandboxing, Cloud Security Broker (CSB), and Data Loss Prevention (DLP). It helps us allow or block specific TCP or UDP ports…

Quotes from Members

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

Pros

"The most valuable feature of Trend Micro Deep Discovery is its complete end-to-end visibility of threats."
"I like the sales operations testing. and support."
"Sandboxing gives us a chance to identify malicious behavior, especially for unknown vulnerabilities, although it's rarely needed as a last resort after all other security measures have failed."
"The solution has extension-based features that help it to analyze the environment. The environment can have different platforms like Windows, Linux, and Mac. The tool will give a report which can confirm the analysis of the issues. You can also get clear information on threats or suspicious files."
"The tool's most valuable feature is its collaboration with other products. Integrating with other security products was simple and easy."
"One of the most valuable features is the performance, since, so far, we have not faced any issues with Deep Discovery."
"The real-time visibility on network traffic provided by Trend Micro Deep Discovery is good, and my customer is satisfied."
"The platform provides all essential features for discovery and administration."
"The best feature is that Zscaler allows for a separation between cloud applications and URL filtering. For example, under the cloud application segment, I can bypass Microsoft Office 365 without the need to add URLs manually. It's one click, so that's handy."
"The initial setup process is easy."
"Cloud IPS integration is seamless, and it uses a Zero Trust model. It also simplifies overall user access management."
"The product's most valuable feature is complete SSL inspection."
"The initial setup is straightforward and easy in comparison with other solutions."
 

Cons

"Some of the end users may not be technically proficient, so they occasionally face problems due to a lack of knowledge."
"I would like to see them create a rule where It could integrate with the network and start mitigating with auto-detection."
"Trend Micro Deep Discovery's technical support could be improved, and it could be made more active."
"The solution is not scalable as it is an agent product rather than a product designed for scalability."
"The product's security features need enhancement."
"I am not aware if Trend Micro Deep Discovery provides any return on investment or cost reductions; it may not be beneficial in terms of finance."
"The stability of the solution could be improved. It should be 100% stable, but it's not there right now."
"I would like to see integration with third-party tools to improve the visibility of the dashboards."
"They have given limited free access for a year. Instead, they should increase the file size and give limited free access for around two months. It will allow engineers to evaluate the product."
"When it comes to scalability, the IPsec could be improved."
"We encounter issues sharing IP addresses with other companies using the software."
"There is always room for improvement."
"We recently had a significant issue with Zscaler. I think they have too many customers and some of their connection edge nodes went down because there were too many requests. I think they aren't scaling enough to keep up with the demand in some areas. That's one thing they should improve."
 

Pricing and Cost Advice

"Compared to its competitors, Trend Micro Deep Discovery is a little expensive."
"The price of the solution is lower compared to the competition."
"Its price is fine, but Trend Micro can improve the pricing in general. It is a hardware solution. It is based on the number of nodes, and according to the number of nodes, clients decide which box they should acquire. They have to renew their license every year. It is subscription-based."
"The tool's licensing costs are yearly. There are no additional costs associated with the product."
"The pricing is okay for some, and sometimes, some people find it expensive."
"Overall, the price is good."
"Trend Micro Deep Discovery is quite expensive compared to other endpoint security products."
"The licensing cost is a bit pricey. We pay a yearly subscription."
"Zscaler has so far been solely responsible for all the sales we have done with it, so it would be more suited than us to address any issues concerning the pricing."
"The product is not affordable for small and medium enterprises."
"The software has become more expensive at present."
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Top Industries

By visitors reading reviews
Computer Software Company
9%
Manufacturing Company
8%
Financial Services Firm
8%
Healthcare Company
7%
Healthcare Company
11%
Manufacturing Company
10%
University
10%
Real Estate/Law Firm
8%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business16
Midsize Enterprise6
Large Enterprise9
No data available
 

Questions from the Community

What do you like most about Trend Micro Deep Discovery?
The tool's most valuable feature is its collaboration with other products. Integrating with other security products was simple and easy.
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...
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Also Known As

Trend Micro Deep Discovery Inspector, Trend Micro Deep Discovery Analyzer
No data available
 

Overview

 

Sample Customers

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
Zenith Live, Azure, Carlsberg Group
Find out what your peers are saying about Fortinet, Darktrace, Check Point Software Technologies and others in Intrusion Detection and Prevention Software (IDPS). Updated: February 2026.
884,873 professionals have used our research since 2012.