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Microsoft Defender for Office 365 vs Trellix Network Detection and Response comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Dec 1, 2024

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
7.4
Users found Microsoft Defender for Office 365 cost-effective, citing improved protection, time efficiency, and savings in security management.
Sentiment score
8.5
Trellix Network Detection and Response exceeded expectations by improving threat prevention and detection, boosting productivity and reducing response times.
It has also decreased our time to detection and response by about 15 to 20 percent.
 

Customer Service

Sentiment score
6.9
Microsoft Defender for Office 365 offers knowledgeable support, though escalation delays and outdated documentation can affect resolution speed.
Sentiment score
6.8
Trellix's support is praised for responsiveness, but improvements in expertise and incident response promptness are suggested by some.
Customer service and support have been fantastic.
Technical support needs improvement as sometimes engineers are not available promptly, especially during high-severity incidents.
 

Scalability Issues

Sentiment score
8.1
Microsoft Defender for Office 365 is scalable, adaptable, and integrates seamlessly, supporting medium to large enterprises efficiently.
Sentiment score
7.8
Trellix Network Detection and Response scales effectively in various industries, performing well in large enterprises without latency issues.
 

Stability Issues

Sentiment score
7.8
Microsoft Defender for Office 365 is highly rated for stability, featuring strong performance and rare minor network issues.
Sentiment score
7.7
Trellix Network Detection and Response is stable and reliable, with consistent performance and high user satisfaction despite occasional minor issues.
 

Room For Improvement

Microsoft Defender for Office 365 requires improvements in antivirus, scalability, integration, interface, threat intelligence, and licensing transparency.
Trellix Network Detection needs improved customization, integration, AI capabilities, support services, and a more user-friendly interface at reduced pricing.
The main area for improvement is simplifying the implementation and rollout process.
I would reduce the cost.
There should be improvements in AI intelligence, faster decision-making, and a more responsive technical support team.
 

Setup Cost

Microsoft Defender for Office 365 pricing varies; often costly for SMBs but competitive for enterprises, with added licensing complexities.
Trellix Network Detection is costly but effective, with yearly licensing, discounts, and competitive pricing against some competitors like Palo Alto.
Money-wise, it is a part of the Office 365 suite, making it slightly more expensive compared to Trend Micro.
 

Valuable Features

Microsoft Defender for Office 365 provides comprehensive email protection with seamless Microsoft integration, enhancing threat management and data security.
Trellix excels in threat protection with AI-driven analysis, automation, and enhanced visibility, benefiting security operations and incident management.
It ranks the threats and allows us to prioritize those hitting us the hardest, such as email threats.
Microsoft Defender for Office 365 is now part of a centralized tenant for my entire group.
Trellix NDR provides an essential defense by automatically responding to network incidents that firewalls may not catch.
 

Categories and Ranking

Microsoft Defender for Offi...
Ranking in Advanced Threat Protection (ATP)
1st
Average Rating
8.2
Reviews Sentiment
7.1
Number of Reviews
48
Ranking in other categories
Email Security (1st), Microsoft Security Suite (11th)
Trellix Network Detection a...
Ranking in Advanced Threat Protection (ATP)
14th
Average Rating
8.4
Reviews Sentiment
7.3
Number of Reviews
39
Ranking in other categories
Network Detection and Response (NDR) (12th)
 

Mindshare comparison

As of April 2025, in the Advanced Threat Protection (ATP) category, the mindshare of Microsoft Defender for Office 365 is 9.2%, down from 15.0% compared to the previous year. The mindshare of Trellix Network Detection and Response is 4.8%, down from 4.9% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Advanced Threat Protection (ATP)
 

Featured Reviews

Tolu Omolaja - PeerSpot reviewer
Great URL scanning and attachment scanning, but I would like more proactive threat analysis
The two main features that prove most beneficial for us are URL scanning and attachment scanning. URL scanning involves an automatic scan of links and emails. When a user clicks on a link within an email, the system promptly checks the link's safety. If the link is deemed safe, access is granted automatically. However, if it is flagged as unsafe, we receive feedback and notification to caution us about the potentially harmful link. At this point, we are presented with the option to proceed or return. I have personally witnessed the system identify a few unsafe links, making this the primary advantage of using the solution. The second crucial aspect is the scanning of attachments. When an email containing an attachment arrives, we receive a notification of the new email, along with information that the attachment is being scanned for threats. This additional layer of security provides peace of mind for our organization. While Microsoft Defender for Office 365 offers numerous features, these two stand out as particularly impressive and valuable to us.
BiswabhanuPanda - PeerSpot reviewer
Offers in-depth investigation capabilities, integrates well and smoothly transitioned from a lower-capacity appliance to a higher one
The in-depth investigation capabilities are a major advantage. When the system flags something as malicious, it provides a packet capture of that activity within the environment. That helps my team quickly identify additional context that most other tools wouldn't offer – like source IP or base64 encoded data. We can also see DNS requests and other details that aren't readily available in solutions like Check Point or others that we've tried. The detection itself is solid, and their sandboxing is powerful. There's a learning curve – you need a strong grasp of OS-level changes, process forking, registry changes, and the potential impact of those. But with that knowledge, the level of information Trellix provides is far greater than what we've seen elsewhere. The real-time response capability of Trellix has been quite effective, although it's not very fast. The key is this solution's concept of 'preference zero.' They don't immediately act on a zero-day. For example, the solution has seen a piece of malware for the first time. It'll let it in, then do sandboxing. Maybe after four or five minutes, it identifies that specific file's DNX Secure Store as malicious. At that point, they update the static analysis engine, and it gets detected if anything else tries to download the same file. There is that initial 'preference zero' concept, like with Panda. You may not hold traffic in the network. That's standard in the industry; we don't do much about it. To address that, we also have endpoint solutions. We use SentinelOne in our environment, which helps us identify threats like Western Bureaus and others.
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Top Industries

By visitors reading reviews
Computer Software Company
16%
Financial Services Firm
9%
Manufacturing Company
8%
Government
6%
Financial Services Firm
17%
Comms Service Provider
11%
Computer Software Company
9%
Manufacturing Company
9%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
 

Questions from the Community

What do you like most about Microsoft Defender for Office 365?
Threat Explorer is an invaluable tool for me, and it plays a crucial role in helping me discern the origins of various email campaigns, pinpointing where they emanate from, and identifying the indi...
What is your experience regarding pricing and costs for Microsoft Defender for Office 365?
I don't have detailed specifics on pricing, setup cost, or licensing.
What needs improvement with Microsoft Defender for Office 365?
I am generally satisfied with how it currently is. If I could improve anything, I would reduce the cost.
What do you like most about FireEye Network Security?
We wanted to cross-reference that activity with the network traffic just to be sure there was no lateral movement. With Trellix, we easily confirmed that there was no lateral network involvement an...
What is your experience regarding pricing and costs for FireEye Network Security?
While I do not handle pricing directly, it is known that there is a variety of customers with different licensing needs, which depends on the organization's size and policy.
What needs improvement with FireEye Network Security?
The Trellix solution could be improved by enhancing the Central Management Console for faster visibility, which would help in network detection response. Networking often involves complexity that c...
 

Also Known As

MS Defender for Office 365
FireEye Network Security, FireEye
 

Overview

 

Sample Customers

Microsoft Defender for Office 365 is trusted by companies such as Ithaca College.
FFRDC, Finansbank, Japan Advanced Institute of Science and Technology, Investis, Kelsey-Seybold Clinic, Bank of Thailand, City of Miramar, Citizens National Bank, D-Wave Systems
Find out what your peers are saying about Microsoft Defender for Office 365 vs. Trellix Network Detection and Response and other solutions. Updated: March 2025.
845,406 professionals have used our research since 2012.