Microsoft Defender for Office 365 vs Trellix Collaboration Security comparison

Microsoft and Trellix are both solutions in the Email Security category. Microsoft is ranked #2 with an average rating of 8.5, while Trellix is ranked #12 with an average rating of 8.8. Microsoft holds a 5.7% mindshare in Email Security, compared to Trellix’s 2.4% mindshare. Additionally, 96% of Microsoft users are willing to recommend the solution, compared to 100% of Trellix users who would recommend it.

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Executive SummaryUpdated on Dec 3, 2024

Trellix Collaboration Security and Microsoft Defender for Office 365 are key players in cybersecurity, specifically in the protection of collaborative environments. Microsoft Defender for Office 365 has an upper hand due to its wide-ranging features and cloud integration, albeit with a higher price. Trellix is more appealing to budget-conscious buyers with its pricing support.

Features: Trellix Collaboration Security offers strong threat detection, protection for collaboration tools, and robust data privacy controls. Microsoft Defender for Office 365 provides advanced threat protection, phishing detection, and seamless integration within the Microsoft ecosystem.

Room for Improvement: Trellix could enhance its integration capabilities beyond collaboration tools and provide more advanced threat analytics. It might also benefit from diversifying its feature set to match broader enterprise needs. Microsoft Defender for Office 365 may improve by simplifying its deployment in non-Microsoft environments, enhancing its cost-effectiveness, and offering more personalized customer support options.

Ease of Deployment and Customer Service: Trellix supports easy deployment with a focus on customer support and seamless integration with various collaborative tools. Microsoft Defender for Office 365 has an advantage through native integration with Microsoft products, which streamlines setup. However, its deployment can be more complex in diverse environments. Microsoft's customer service is efficient due to extensive resources, while Trellix offers a personalized support model.

Pricing and ROI: Trellix Collaboration Security provides competitive setup costs and favorable ROI, especially for organizations focused on collaboration tool security. Microsoft Defender for Office 365, despite a higher setup cost, offers extensive coverage that leads to significant ROI for businesses already utilizing Microsoft solutions. Trellix is preferred by budget-focused organizations, while Microsoft is valued for its feature richness.

To learn more, read our detailed Microsoft Defender for Office 365 vs. Trellix Collaboration Security Report (Updated: August 2026).

Buyer's Guide

Microsoft Defender for Office 365 vs. Trellix Collaboration Security

August 2026

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Helped 908,344 peers since 2012

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

Cloudflare One

Mindshare comparison

As of August 2026, in the Email Security category, the mindshare of Cloudflare One is 1.7%, up from 1.4% compared to the previous year. The mindshare of Microsoft Defender for Office 365 is 5.7%, down from 11.6% compared to the previous year. The mindshare of Trellix Collaboration Security is 2.4%, up from 1.7% compared to the previous year. It is calculated based on PeerSpot user engagement data.

Email Security Mindshare Distribution
Product	Mindshare (%)
Microsoft Defender for Office 365	5.7%
Trellix Collaboration Security	2.4%
Cloudflare One	1.7%
Other	90.2%

Email Security

Featured Reviews

Cobe Van Coller

Network Architect at IP Dimension

Cloud security has improved remote access and has reduced costs for smaller client sites

I have used Cloudflare One's Identity-Aware Proxy, and it is quite straightforward from what I have seen so far. The app registration on the Azure side integrates fully into Cloudflare, and I am very satisfied with that part because it is easy to set up. The integration of Cloudflare One's Secure Web Gateway and Zero Trust Network Access works without any issues. That part is pretty automatic, and if you complete the rest of the setup, it comes together by itself with no issues from my side. What makes it nice is that we can actually start replacing on-site firewalls at this stage for the smaller clients because it does not matter if they go to a coffee shop or work from home; they are still secured by the same connection. The hops get shorter and you get better latency. We have done testing to see if it is better. One thing that we did notice with our proof of concept with our current client is that they have people connecting from the UK. When they used their previous VPN solution, uploading CAD drawings and other files to the server took a long time. They mentioned that it is much quicker on Cloudflare One's solution. I definitely believe that is part of the improved performance, and I am satisfied with that as well. What is nice about Cloudflare One is that it makes the setup easier and also easier to train technicians to maintain it. Compared to legacy systems, we do not need to get fancy firewalls in place that are costly. That is definitely also a cost-saver with Cloudflare One.

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Emeka Ndulu

Cloud Solutions Architect at a tech services company with 201-500 employees

Improves threat visibility and response while reducing manual tasks and training users against phishing

I appreciate the attack simulation feature whereby I get to train users and educate them on how to identify phishing emails and spam emails, as well as the anti-spam protection. It gives me visibility into my threat environment and threat landscape to ensure that I am one step ahead of any likelihood of threats within my environment. I get to detect it and respond, so the threat intelligence is very effective. Microsoft security solutions save my time. It saves money because once I protect my environment, I don't lose money. It has decreased my detection time and my time to respond.

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Jorge Abalo

Endpoint Security Analyst at BNP Paribas

Endpoint protection has strengthened network control and has simplified global threat response

In my opinion, the best features Trellix Collaboration Security offers include the firewall, the on-access scan, and the ability to obtain daily signatures for the latest malware. These daily signatures, referred to as content, ensure that we are protected against the most recent malware threats recognized by other companies. Another feature I particularly enjoy is the capability to maintain different locations that can communicate with the fabric, or DXL fabric as I refer to it, allowing me to create something akin to an EDR for immediate responses to resolve issues. The DXL fabric has helped my organization by enabling communication between different locations, such as one in Europe, another in South America, and one here. This fabric communicates with a broker that interacts with the TIE servers, which maintain the reputation of files, certificates, and known signatures from various regions including Europe, South America, and Canada. When something suspicious occurs, such as a certificate appearing malicious on an application, I can easily click and indicate that I trust this file, and through the fabric, I can apply an exclusion for that application across all locations simultaneously. Other features I find valuable include the SSO integration with Trellix EPO, specifically SAML SSO, allowing people not to have to manage usernames and passwords if they already utilize an SSO service for SAML; I consider this functionality to be quite beneficial.

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Quotes from Members

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

Pros

"It's a perfect solution from my perspective; it's easy to understand and easy to configure."

"The simplicity of the solution is its valuable features as almost no effort was needed to learn the configurations. It is also one of the cheapest firewalls available in this category."

"We mostly use Cloudflare WAF, and gets basic Cloudflaire DDoS, caching as extra bonus . We like the factor these features are all integrated into 1 console, simple to manage."

"The blocking feature is very good."

"Cloudflare One has assisted in securing my remote workforce through a SASE solution with Cloudflare One and the Workers part, although I am not currently using the Workers component."

"Enables me to work from two locations."

"It is a stable solution."

"The capabilities of the software are strong enough for me to do what it's supposed to do. For me, we don't need to do a lot of configuration on our site. We just enable it and monitor it."

More Cloudflare One pros

"The insights provided with Microsoft Defender for Office 365 are helpful because it comes with the E5 license, and by default, we can use a lot of capabilities."

"Scalability-wise, I do not think there are any issues so far."

"The risk level notifications are most valuable. We get to know what kind of intrusion or attack is there, and we can fix a problem on time."

"The email protection is excellent, especially in terms of anti-phishing policies."

"Safe attachments, safe links, policies, and the ability to protect from zero-day threats are the most valuable features."

"It has helped us in improving our security posture; it detects any kind of attack or abnormal behavior in accessing the system and sends an alert to the administrator who can check, understand, and review on time to ensure that all activities are legit."

"It has significantly decreased my time to detection and response."

"Defender enables us to secure all 365-related activity from a single place. It gives us visibility into everything happening in Outlook, protecting us against phishing and other email-based threats. Defender helps us detect any suspicious behaviors."

More Microsoft Defender for Office 365 pros

"It is one of the greatest solutions to have or to complement any other security solution such as Proofpoint or IronPort."

"FireEye Email Security helps us prevent spam and phishing emails and all other business-compromised email attacks."

"The auto-remediation feature is valuable."

"The product protects my email."

"We can control this solution from the cloud and are able to access it from wherever we are."

"The product helps reduce the number of malicious emails reaching the user's inbox."

"Trellix Collaboration Security is valued for being a stable and comprehensive solution that fulfills customer needs."

"We have had very good results from the use of FireEye Email Security. We are very comfortable with this technology, but I don't know if it's necessary to move into the cloud, we will check other technologies and study them. Additionally, the solution has good integration."

More Trellix Collaboration Security pros

Cons

"Automation could be improved where you can easily add a TLS and SSL certificate to an application or web app if the developer did not include it."

"The free plan has limitations. For example, I can only set up three rules, and the application firewall is unavailable."

"Cloudflare Zero Trust Platform needs to improve its documentation. It took time to do the implementation."

"The response time for support must be reduced."

"The initial onboarding was causing us some confusion."

"There are premium tier live service and lower tier live service, so we opted for the lower tier. But there is no medium tier where we pay a little extra and get a bit more service. So if that can be improved."

"Our customers no longer use Cloudflare because its service is subpar."

"Cloudflare DDoS has poor technical support."

More Cloudflare One cons

"Microsoft sometimes has downtime, and we'll get several incidents coming in back to back. We have a huge backlog of notifications, many of which may be false positives. However, there might be serious alerts, so we can't risk dismissing all of them at once."

"The custom alerts have to improve a lot."

"I'd like some additional features any product can give me to protect our environment in a better way."

"The certification training for Defender for 365 needs to be deeper and incorporate Sentinel. I took all the security courses except one, and Sentinel isn't included."

"They have moved features from one console to another. Things have been moved around in the interface and it takes me time to find where certain features are."

"Sometimes, phishing emails manage to pass through the filter, so the system needs to enhance its phishing email detection capabilities."

"The pre-sales cost calculations could be more transparent."

"Microsoft wants its well-paying customers to finish testing some of its half-baked products, find bugs, and report bugs back to Microsoft's team, which is a little frustrating for those who have to manage it and roll it up to thousands of people across the organization."

More Microsoft Defender for Office 365 cons

"I deduct two points because while we are using it for insiders, we still rely on another solution for gateway level security, which makes us use two different solutions for the same purpose."

"The solution must provide features to scan QR codes for threats."

"There is a need for improved integration with totally different products, such as a rapid server."

"Trellix Collaboration Security can be improved by making the reporting and analysis tools more detailed."

"FireEye needs single sign-on. They say it's on their roadmap. They should also implement support for Microsoft Authenticator app for 2FA."

"Sometimes, integration can be challenging, impacting its stability, which is why I rate it a five out of ten."

"I would rate them as a 1.5. The new hub created in India is not good."

"The cloud product is not open to the customers. If the system itself could be more open to the customer, I'd be able to configure it more specifically."

More Trellix Collaboration Security cons

Pricing and Cost Advice

"The pricing of the solution is cheap. The licensing cost is also very low. I rate the cost and pricing a three out of ten."

"The pricing is somewhere in the middle. I would rate the pricing a seven out of ten."

"The solution's pricing lacks transparency."

"The prices are slightly expensive."

"The solution is not that expensive."

"My company has to make yearly payments towards the licensing costs attached to the solution. There are no hidden charges apart from the licensing costs of the solution."

"The price tag is no longer $200,000, but rather $300,000 to $400,000. It's twice."

"Cloudflare Zero Trust Platform's pricing is good."

"Microsoft Defender is expensive. I typically recommend it only if clients have the budget. Otherwise, I would suggest an alternative."

"The pricing is normal. Considering its popularity, it's not overpriced."

"The pricing has become expensive."

"The solution could be better by simplifying the business model of their licensing. It was hard to figure out how to get the licensing done for the environment, initially."

"It is much more expensive than using another solution because we have had to include some options and upgrade our license."

"Defender is a little bit more expensive as compared to others. We are in the manufacturing environment. So, we don't have a high budget for all of our endpoint devices. Its cost is a major concern for us."

"Microsoft Defender for Office 365 is an add-on to the Office license. Many customers are purchasing this solution."

"It's a user-base subscription."

More Microsoft Defender for Office 365 pricing and cost advice

"The cost is very high."

"The solution requires a license to be purchased for every user."

"The licensing is on a yearly basis."

"I rate the product price as nine out of ten, where ten is the most expensive, and one is the cheapest. There is no need to pay any extra charges apart from the licensing costs."

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Top Industries

By visitors reading reviews

Construction Company

19%

Comms Service Provider

10%

Outsourcing Company

Financial Services Firm

Computer Software Company

11%

Manufacturing Company

Financial Services Firm

Comms Service Provider

Construction Company

15%

Manufacturing Company

12%

Healthcare Company

12%

Comms Service Provider

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

By reviewers
Company Size	Count
Small Business	10
Midsize Enterprise	1
Large Enterprise	12

By reviewers
Company Size	Count
Small Business	24
Midsize Enterprise	11
Large Enterprise	32

By reviewers
Company Size	Count
Small Business	15
Midsize Enterprise	7
Large Enterprise	17

Questions from the Community

What is your experience regarding pricing and costs for Cloudflare Zero Trust Platform?

Pricing is competitive. Akamai is more expensive, in my view.

See all answers

What needs improvement with Cloudflare Zero Trust Platform?

In my opinion, Cloudflare One can be improved mainly through compatibility, as the integration should be much simpler...

See all answers

What is your primary use case for Cloudflare Zero Trust Platform?

Cloudflare One's primary use case for my organization is to protect servers and to provide remote access with the VPN...

See all answers

What is your experience regarding pricing and costs for Microsoft Defender for Office 365?

My experience with pricing, setup, and licensing is that it's actually quite reasonable even on the licensing side as...

See all answers

What needs improvement with Microsoft Defender for Office 365?

I think Microsoft Defender for Office 365 can be improved by creating more educational pieces about not just looking ...

See all answers

What is your primary use case for Microsoft Defender for Office 365?

My main use cases for Microsoft Defender for Office 365 include email hygiene.

See all answers

What needs improvement with FireEye Email Security?

I believe no improvements are needed for Trellix Collaboration Security as we are already using more tools from Trell...

See all answers

What is your primary use case for FireEye Email Security?

My main use case for Trellix Collaboration Security is to protect our platforms like Slack, Microsoft Teams, Google W...

See all answers

What advice do you have for others considering FireEye Email Security?

My advice for others looking into using Trellix Collaboration Security is to prevent insider threat vectors because a...

See all answers

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Compared 4% of the time

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Compared 3% of the time

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Compared 60% of the time

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Compared 5% of the time

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Compared 3% of the time

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Compared 3% of the time

More Trellix Collaboration Security Competitors

Product Reports

Buyer's Guide

Cloudflare One

August 2026

Download Cloudflare One product report

Buyer's Guide

Microsoft Defender for Office 365

July 2026

Microsoft Defender for Office 365 report

Download Microsoft Defender for Office 365 product report

Buyer's Guide

Trellix Collaboration Security

July 2026

Download Trellix Collaboration Security product report

Also Known As

Cloudflare Area 1 Email Security, Cloudflare Bot Management, Cloudflare Gateway, Cloudflare Zero Trust Platform, Cloudflare DDoS, Cloudflare SASE & SSE Platform

MS Defender for Office 365

FireEye Email Security

Overview

Cloudflare One is a comprehensive platform for security, performance, and connectivity. It provides features like rate limiting, DDoS protection, and application access, tailored to enhance user experience while securing internet access and accelerating communications.

Designed to integrate security measures with ease of use and scalability, Cloudflare One offers a secure web gateway and zero trust network access. These features ensure seamless setup and operation, making connectivity reliable and protected. Users appreciate its integrated console, intuitive interface, and the ability to manage risk effectively. It offers straightforward deployment, improves latency, and boasts cost-effectiveness. While its onboarding process and documentation need enhancement, its value in content delivery and application shielding is notable. Despite challenges in integrating Cloudflare Access with existing VPNs and the need for better automation and support, it remains vital for DNS and infrastructure protection.

What features make Cloudflare One stand out?

Rate Limiting: Controls the traffic rate to prevent abuse.
DDoS Protection: Shields applications from distributed denial-of-service attacks.
Secure Web Gateway: Provides secure internet access with seamless operation.
Zero Trust Network Access: Ensures secure, application-based connectivity without relying on traditional VPNs.
Access for Connectivity: Facilitates access to internal applications securely.

What benefits should users look for in reviews?

Security: Robust measures for DNS and browsing protection.
Performance: Enhanced site accessibility and communication speed.
Cost-Effectiveness: Offers competitive pricing for its features.
Ease of Deployment: Straightforward and efficient setup process.

In industries like finance, retail, and technology, Cloudflare One is crucial for enabling secure remote access and protecting web applications against dynamic threats. It supports compliance access policies and enhances content delivery, playing a key role in safeguarding digital infrastructure.

Cloudflare

Microsoft Defender for Office 365 offers real-time email security, enhancing threat detection through integration within the Microsoft ecosystem. Its user-friendly interface and central management streamline operations, providing robust protection against phishing, ransomware, and malware.

Defender for Office 365 is focused on efficiently securing email communication by safeguarding against phishing, malware, and spam threats. With its strong integration with other Microsoft services, it is tailored to improve endpoint security and identity protection. Its centralized management tools simplify threat prioritization, while the automated threat response capabilities ensure swift actions against potential risks. Organizations leverage its capabilities to efficiently manage their cybersecurity efforts, particularly in remote work environments, while maintaining a secure system across Office 365 applications and Azure-hosted services.

What are the key features?

Real-time Email Protection: Continuously monitors and protects email communications.
Safe Attachments and Links: Scans attachments and links for potential threats.
Anti-Phishing Measures: Provides tools to detect and block phishing attempts.
Integration with Microsoft Services: Seamlessly connects with other Microsoft applications for enhanced security.
Automated Threat Responses: Activates immediate responses to detected threats.

What benefits should users expect from reviews?

Time Savings: Automates processes to reduce manual threat management efforts.
Improved Cybersecurity: Strengthens organizational defenses against various cyber threats.
Efficient Remote Work: Enhances protection for remote teams and virtual collaborations.
Comprehensive Coverage: Extends protection across Office 365 and Azure services.

Implementations of Defender for Office 365 vary across industries, optimizing email security for sectors such as finance, healthcare, and education. In finance, it aids in protecting sensitive financial data from phishing and fraud. Healthcare benefits from secure communications, ensuring patient data privacy. Educational institutions use it to maintain secure virtual learning environments against cyber threats.

Microsoft

Trellix Collaboration Security enhances communication platforms with robust protective measures, utilizing threat intelligence, secure file sharing, customizable dashboards, and cloud compatibility. Its design fosters real-time threat prevention with features like deep packet inspection and automatic mail scans.

Established to secure communications, Trellix Collaboration Security employs advanced technologies like GTI threat intelligence and SSL to ensure data safety. Users benefit from real-time threat detection, streamlined cloud integration, and a responsive interface. Its functionalities include automatic email scanning, firewall and anti-spam capabilities that build a reliable security infrastructure revered for its scalability and straightforward deployment. Trellix also integrates threat intelligence tools and enhances control over security operations, encouraging efficient prevention strategies.

What are the essential features of Trellix Collaboration Security?

GTI Threat Intelligence: Provides insights into potential threats.
Deep Packet Inspection: Examines data packets to detect malicious activities.
Secure File Sharing: Facilitates secure exchanging of files.
Customizable Dashboards: Offers adaptable views for tailored monitoring.
Automatic Mail Scans: Identifies and filters threats in emails.

Which benefits and ROI should be considered?

Real-Time Threat Response: Ensures immediate action against detected threats.
Cloud Platform Compatibility: Supports hybrid environments for flexible operations.
Scalability: Adapts to the growing security needs without compromising efficiency.
User-Friendly Interface: Enhances user interaction and ease of use.

In distinct industries like finance and healthcare, Trellix Collaboration Security plays a crucial role in ensuring email protection and secure data exchange. It helps these sectors combat threats like phishing and unauthorized access by leveraging advanced scanning methods and integrating management tools such as LDAP. Organizations value its ability to safeguard network communications and manage large-scale endpoints effectively, whether on-premise or in the cloud. The solution's customization and configuration capabilities allow tailored implementations, ensuring optimal protection across diverse operational needs.

Trellix

Sample Customers

23andMe

Microsoft Defender for Office 365 is trusted by companies such as Ithaca College.

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

Buyer's Guide

Microsoft Defender for Office 365 vs. Trellix Collaboration Security

August 2026

Free Report: Microsoft Defender for Office 365 vs. Trellix Collaboration Security

Find out what your peers are saying about Microsoft Defender for Office 365 vs. Trellix Collaboration Security and other solutions. Updated: August 2026.

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See our Microsoft Defender for Office 365 vs. Trellix Collaboration Security report.

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We monitor all Email Security reviews to prevent fraudulent reviews and keep review quality high. We do not post reviews by company employees or direct competitors. We validate each review for authenticity via cross-reference with LinkedIn, and personal follow-up with the reviewer when necessary.