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

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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) (21st)
 

Featured Reviews

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.
Utpal Sinha - PeerSpot reviewer
Sr Manager at HCL Tech
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

"Fire Eye is incredibly expensive, and requires multiple appliances which together, scan far less protocols than DDi."
"Initial setup is easy. It can be done by yourself."
"The reporting is very good, providing detailed analysis in a short amount of time."
"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 most valuable features are the protection and that it is fast."
"The most valuable features are monitoring for advanced persistent threats, the system runs in a sandbox allowing for effective zero-day exploits management, and the Inspector has a built-in sandbox."
"The performance and stability are great."
"The tool's most valuable feature is its collaboration with other products. Integrating with other security products was simple and easy."
"The initial setup is straightforward and easy in comparison with other solutions."
"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 product's most valuable feature is complete SSL inspection."
"Cloud IPS integration is seamless, and it uses a Zero Trust model, and it also simplifies overall user access management."
"The initial setup process is easy."
 

Cons

"The tool's configuration can be made easier."
"The solution is not scalable as it is an agent product rather than a product designed for scalability."
"The scalability is sometimes limited."
"All issues we faced related to false positives regarding many hashes and URLs specifically for mail gateway and sandboxing, which led us to open a threat ticket with Trend Micro support for validation."
"The solution could be more secure."
"Scalability becomes an issue when managing a higher number of customers."
"Sometimes there needs to be a stability test done. We did tests and checked up to around 20 or 25 samples; out of those tests, two missed and were later detected on the endpoint, so it is not completely stable and it misses things."
"The solution should support multiple platforms in Windows, Linux, and Mac. Customers can have different software types. The virtual environment should be able to install and analyze them. The tool also gives only a minimum level of extension support. It may not be able to extract files and give details about them. I would also like to see third-party product integration in the tool. The solution's current integration is only with Trend Micro products only."
"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."
"There is always room for improvement."
"We encounter issues sharing IP addresses with other companies using the software."
"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."
"When it comes to scalability, the IPsec could be improved."
 

Pricing and Cost Advice

"The licensing cost is a bit pricey. We pay a yearly subscription."
"Compared to its competitors, Trend Micro Deep Discovery is a little expensive."
"The pricing is okay for some, and sometimes, some people find it expensive."
"The tool's licensing costs are yearly. There are no additional costs associated with the product."
"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."
"Overall, Trend Micro Deep Discovery has proven to be a reliable solution that enhances our security posture while minimizing operational disruptions."
"The tool’s licensing costs depend on the customers."
"The price of the solution is lower compared to the competition."
"The software has become more expensive at present."
"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."
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Top Industries

By visitors reading reviews
Outsourcing Company
11%
Construction Company
9%
Financial Services Firm
8%
Comms Service Provider
7%
Healthcare Company
13%
Construction Company
10%
Manufacturing Company
10%
Comms Service Provider
10%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business14
Midsize Enterprise7
Large Enterprise11
No data available
 

Questions from the Community

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...
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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 Darktrace, Fortinet, Check Point Software Technologies and others in Intrusion Detection and Prevention Software (IDPS). Updated: October 2026.
920,769 professionals have used our research since 2012.