Microsoft Defender for Office 365 vs Trellix Collaboration Security comparison

Microsoft Defender for Office 365 vs. Trellix Collaboration Security

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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 July 2026, in the Email Security category, the mindshare of Cloudflare One is 1.7%, up from 1.5% compared to the previous year. The mindshare of Microsoft Defender for Office 365 is 6.1%, down from 12.3% compared to the previous year. The mindshare of Trellix Collaboration Security is 2.4%, up from 2.0% 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	6.1%
Trellix Collaboration Security	2.4%
Cloudflare One	1.7%
Other	89.8%

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.

Read full review

Quotes from Members

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

Pros

"Cloudflare DDoS is better than its competitors for its security, deployment, and scalability."

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

"Cloudflare, in my opinion, was easy to implement."

"Cloudflare is simple to use."

"It's the endpoint exposition. We don't need to expose our VPN server to the internet and need a zero-test solution. I can apply some conditional access to the endpoint that's connecting to our network to check their security policies or the security condition of their workstation. Once the workstation is trying to connect to my internal network, then I would like to check the discrete condition of these endpoints that are trying to access my internal network. We created some conditional access. We have CrowdStrike, to check if the CrowdStrike is installed, to check if it's updated, and to check for Windows updates. We created some conditional policies to check it."

"It will take the blow rather than our applications should an attack occur."

"Cloudflare DDoS mitigates DDoS attacks."

"Cloudflare Access is a stable solution."

More Cloudflare One pros

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

"The most valuable feature of Microsoft Defender for Office 365 is its spam filter."

"Defender for 365 is a comprehensive cloud-based solution. The value of the cloud is that you aren't alone. Threat intelligence and analytics are shared in the cloud. We don't have to find the solution alone. If you face an unknown threat with traditional solutions like Trend Micro and Symantec, you need to open a case and send your information to them to analyze forensically and identify the source of the attack."

"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."

"Our customers are satisfied with Defender for 365 because Microsoft products are easy to use and customize to meet the client's needs. Everything is in one place, so we can adjust policies as needed for phishing, DLP, ATP, or any other security features that our clients want to apply."

"Defender for Office 365 has helped eliminate having to look at multiple dashboards and that is the aspect I like most about it. It is simpler, effective, and convenient. The users like the process efficiency."

"It gives us visibility into threats and, for endpoints, it helps us to prioritize threats. We used to have a lack of visibility, but now our time to detect and respond has decreased."

"We use Microsoft Defender for its ability to integrate with existing business technologies, which is beneficial for protecting business areas."

More Microsoft Defender for Office 365 pros

"FireEye Email Security is easy to use."

"I rely on Trellix Collaboration Security because the sensors are highly reliable and high-performance sensors that can handle traffic efficiently."

"Before installing, consider potential challenges with system performance, especially when integrating multiple tools, which could slow down performance."

"I'd recommend the product due to the fact that it can stop most of the phishing and malicious items from getting through our email."

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

"What I find most valuable with the solution is that it can integrate with cloud solutions, such as Google and Microsoft. Additionally, the solution is easy to use."

"The product protects my email."

"One of the most valuable features is the protection against vulnerabilities, particularly through virtual patching."

More Trellix Collaboration Security pros

Cons

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

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

"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."

"The pricing is an area that can be improved. Pricing, as far as I recall, was the source of our problems."

"The tool should provide on-premise versions. Currently, all versions are cloud-based."

"Feedback could be enhanced. While I work efficiently with Clover as a partner in Mexico City, sometimes the information and requests are easier to manage with more concrete solutions."

"The software has automated alerts, but the automated alerts are not available in the mobile app."

"From a logging perspective, it is still a bit difficult to see exactly what users are being blocked with the current views."

More Cloudflare One cons

"There is a different console for different things; I just want one consolidated console."

"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."

"Its price should be improved. Its cost is a major concern for us."

"Microsoft could improve by offering recommendations for domain spoofing attacks, especially scenarios where DNS records like SPF, DKIM, and DMARC are not properly published."

"The visibility into threats is not up to the mark, as I do not have control. I rate my experience with Microsoft Defender for Office 365 as six out of ten due to troubleshooting and pricing concerns."

"I assess the stability and reliability of the solution as seven out of ten."

"Microsoft Defender for Office 365 should be more proactive."

"I was looking for some advanced features, like if I would receive an email that contains a legitimate file type, but the content is malicious, how I can protect against that?"

More Microsoft Defender for Office 365 cons

"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."

"The solution needs better support."

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

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

"The custom tailoring is limited."

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

"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 spam detection feature could be better."

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."

"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 solution is not that expensive."

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

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

"The prices are slightly expensive."

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

"The solution's pricing lacks transparency."

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

"While Microsoft Defender for Office 365 necessitates pricier E3 or E5 subscriptions, the extensive functionality offered by these licenses across various Microsoft products justifies the investment."

"It's a user-base subscription."

"For large enterprise organizations, they can definitely afford it, but for small and medium organizations, they might struggle to cover the expenses."

"I was working in the government and it was too expensive for us to use our Microsoft products."

"Defender for 365 comes in various plans and licenses, along with other Microsoft security solutions. Purchasing this kind of package or security bundle gives good value for money, and that's what I recommend."

"For licensing, it's usually a yearly package for customers who are subscribed to Office 365, but they can also pay on a monthly basis."

"The license is expensive because the cost is based on the number of users."

More Microsoft Defender for Office 365 pricing and cost advice

"The cost is very high."

"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."

"The licensing is on a yearly basis."

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

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Top Industries

By visitors reading reviews

Construction Company

19%

Comms Service Provider

10%

Financial Services Firm

Manufacturing Company

Computer Software Company

12%

Manufacturing Company

Financial Services Firm

Comms Service Provider

Construction Company

15%

Manufacturing Company

14%

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	6
Large Enterprise	15

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.

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...

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...

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...

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 ...

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.

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...

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...

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...

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FortiSASE vs Cloudflare One

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Compared 6% of the time

Check Point Email Security (formerly Harmony Email & Collaboration) vs Microsoft Defender for Office 365

Compared 4% of the time

Mimecast Advanced Email Security vs Microsoft Defender for Office 365

Compared 4% of the time

Cisco Secure Email vs Microsoft Defender for Office 365

Compared 3% of the time

Barracuda Email Protection vs Microsoft Defender for Office 365

Compared 3% of the time

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Cisco Secure Email vs Trellix Collaboration Security

Compared 59% of the time

Mimecast Advanced Email Security vs Trellix Collaboration Security

Compared 5% of the time

MetaDefender Email Security Solutions vs Trellix Collaboration Security

Compared 4% of the time

Barracuda Email Security Gateway vs Trellix Collaboration Security

Compared 4% of the time

Check Point Email Security (formerly Harmony Email & Collaboration) vs Trellix Collaboration Security

Compared 3% of the time

More Trellix Collaboration Security Competitors

Product Reports

Download Cloudflare One product report

Cloudflare One

July 2026

Microsoft Defender for Office 365

Download Microsoft Defender for Office 365 product report

Microsoft Defender for Office 365 report

Trellix Collaboration Security

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

Microsoft Defender for Office 365 vs. Trellix Collaboration Security