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Tessian Defender vs Trellix Collaboration Security comparison

 

Comparison Buyer's Guide

Executive Summary

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

Tessian Defender
Ranking in Email Security
63rd
Average Rating
0.0
Number of Reviews
0
Ranking in other categories
No ranking in other categories
Trellix Collaboration Security
Ranking in Email Security
18th
Average Rating
8.6
Reviews Sentiment
7.0
Number of Reviews
15
Ranking in other categories
Instant Communications Security and Compliance (5th), Secure Email Gateway (SEG) (8th)
 

Mindshare comparison

As of September 2025, in the Email Security category, the mindshare of Tessian Defender is 0.2%, up from 0.2% compared to the previous year. The mindshare of Trellix Collaboration Security is 1.8%, down from 2.4% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Email Security Market Share Distribution
ProductMarket Share (%)
Trellix Collaboration Security1.8%
Tessian Defender0.2%
Other98.0%
Email Security
 

Featured Reviews

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BernardLugalia - PeerSpot reviewer
Provides strong data protection with virtual patching and vulnerability assessments
I primarily use it to monitor database access, particularly in banking and similar environments. It ensures that IT personnel and others do not create unauthorized accounts or users. Collaboration security assists in tracking database access and alerts in case of suspicious activity One of the…
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867,370 professionals have used our research since 2012.
 

Top Industries

By visitors reading reviews
No data available
Manufacturing Company
19%
Computer Software Company
11%
Comms Service Provider
9%
Government
9%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
No data available
By reviewers
Company SizeCount
Small Business6
Midsize Enterprise4
Large Enterprise5
 

Questions from the Community

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What do you like most about FireEye Email Security?
One of the valuable features of the product stems from the fact that it is easy to implement the tool in our environment.
What needs improvement with FireEye Email Security?
I would like to see the addition of email digital protection features, such as anti-spam and antivirus, not just sandboxing, in the on-premises solution.
What is your primary use case for FireEye Email Security?
I have worked on Email Security ( /categories/email-security ) both on-premises and in the cloud, Web Security, and also on MDR, which is called HX endpoint security for Trellix Collaboration Secur...
 

Also Known As

No data available
FireEye Email Security
 

Overview

 

Sample Customers

Affirm, Choate, BMA, Evercore, Gubra, Accel, Fieldfisher, Clearwater, Man Group plc, Graphcore, Investec, Rightmove
Northshore Utility District, Luz Technologies, Air Academy Federal Credit Union, Bank Gutmann, Bank of Thailand, Penn State Health Milton S. Hershey Medical Center, State of Missouri, City and County of San Francisco, Denver Public Schools, Vodafone, Go Auto, Stater Bros. Market
Find out what your peers are saying about Microsoft, Abnormal Security, Proofpoint and others in Email Security. Updated: August 2025.
867,370 professionals have used our research since 2012.