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Fortinet FortiSandbox vs Microsoft Defender for Office 365 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
7.8
Fortinet FortiSandbox ensures high ROI by preventing cyber threats, saving costs, and securing data, rated nine out of ten.
Sentiment score
6.9
Microsoft Defender for Office 365 offers strong ROI through security enhancements, cost savings, and improved company productivity despite measurement challenges.
It has also decreased our time to detection and response by about 15 to 20 percent.
Technology support manager at Alfred State College
Overall, cost of owning and operating our system goes down.
Designation Chief Consultant at Avtow
It's hard to quantify the return on investment we've seen from Microsoft Defender for Office 365.
Chief Architect at a tech vendor with 1,001-5,000 employees
 

Customer Service

Sentiment score
7.2
Fortinet FortiSandbox generally offers friendly, informed support, but users face delays and need better handling of complex issues.
Sentiment score
5.8
Microsoft Defender for Office 365 users rate support highly, praising its responsiveness and 24/7 availability, despite occasional documentation and communication issues.
Sometimes the technical engineer is very good and helpful, and sometimes we go through many processes until it gets escalated to a higher level or to another advanced technical engineer.
Security Manager at a computer software company with 11-50 employees
Over the past two years, there have been no critical problems.
Solution Consultant at BIM Group of Companies
we opened tickets, and they typically resolve them quickly.
Chief Architect at a tech vendor with 1,001-5,000 employees
With a subscription for Microsoft Defender for Office 365, it is an eight. Without it, it is a six.
Manager at a tech services company with 10,001+ employees
 

Scalability Issues

Sentiment score
7.4
Fortinet FortiSandbox is scalable and adaptable, though experiences vary with cloud licenses and hardware requirements.
Sentiment score
7.8
Microsoft Defender for Office 365 offers scalable, efficient protection for large enterprises, ensuring seamless growth across diverse industries.
We have never faced scalability problems, and Microsoft manages it effectively.
Solution Consultant at BIM Group of Companies
Microsoft Defender for Office 365 scales transparently for us, as we grew from 1,000 users to 3,000 users, and we didn't notice much difference.
Chief Architect at a tech vendor with 1,001-5,000 employees
Microsoft Defender for Office 365 scales with the growing needs of my company well.
Senior Client Director and Advisory Service Leader at Crossfuze
 

Stability Issues

Sentiment score
7.6
Fortinet FortiSandbox is generally rated as stable and reliable, with users giving stability ratings between eight and nine.
Sentiment score
7.7
Microsoft Defender for Office 365 provides 99.9% uptime with minor issues, ensuring reliable performance and seamless cloud integration.
Fortinet FortiSandbox works fine, is easy to manage, and functions well.
Security Manager at a computer software company with 11-50 employees
I would rate the stability of Microsoft Defender for Office 365 as 10 over 10 because it's highly available, it works, and it does the job it is meant to do.
Cloud Solutions Architect at a tech services company with 201-500 employees
I have not experienced any downtime, crashes, or performance issues because of Defender.
Technology Associate at a financial services firm with 51-200 employees
The solution is stable, as we have been using it for the past two years.
Solution Consultant at BIM Group of Companies
 

Room For Improvement

Fortinet FortiSandbox needs better vendor integration, enhanced features, improved usability, and faster, more automated security analysis capabilities.
Users call for enhanced virus detection, cross-platform support, and pricing transparency in Microsoft Defender for Office 365.
I think Fortinet FortiSandbox could introduce more automation tools and AI tools.
Security Manager at a computer software company with 11-50 employees
The main area for improvement is simplifying the implementation and rollout process.
Infrastructure and Security Lead at Vedanta
Microsoft could improve by offering recommendations for domain spoofing attacks, especially scenarios where DNS records like SPF, DKIM, and DMARC are not properly published.
Solution Consultant at BIM Group of Companies
There is a different console for different things; I just want one consolidated console.
Senior Director, Security Architecture & Engineering at a leisure / travel company with 10,001+ employees
 

Setup Cost

Fortinet FortiSandbox is priced mid-range, with options for cloud and on-prem, plus potential support license costs.
Microsoft Defender for Office 365 pricing is seen as flexible but potentially expensive, offering value in comprehensive security features.
The cost is in the mid-range.
Security Manager at a computer software company with 11-50 employees
We've likely saved 30% of costs.
Designation Chief Consultant at Avtow
Money-wise, it is a part of the Office 365 suite, making it slightly more expensive compared to Trend Micro.
Infrastructure and Security Lead at Vedanta
Microsoft is quite affordable with a lot of features available for any size organization.
Solution Consultant at BIM Group of Companies
 

Valuable Features

Fortinet FortiSandbox delivers excellent threat detection, seamless integration, fast performance, ease of use, and robust customization options.
Microsoft Defender for Office 365 enhances email security with anti-phishing, anti-malware, threat intelligence, and seamless integration for efficient management.
The smooth integrations between Fortinet FortiSandbox and other Fortinet solutions such as FortiWeb and FortiFirewall and with other Fortinet environments are what I really appreciate.
Security Manager at a computer software company with 11-50 employees
It ranks the threats and allows us to prioritize those hitting us the hardest, such as email threats.
Technology support manager at Alfred State College
It provides end-to-end visibility on email threats such as phishing, extending beyond Exchange Online Protection.
Solution Consultant at BIM Group of Companies
The value of the DLP feature is significant to us because we have internal data, sometimes sensitive, and the users may not always be aware of security and privacy, which might lead them to send out information mistakenly to external parties.
Chief Architect at a tech vendor with 1,001-5,000 employees
 

Categories and Ranking

Fortinet FortiSandbox
Ranking in Advanced Threat Protection (ATP)
7th
Average Rating
8.2
Reviews Sentiment
7.1
Number of Reviews
39
Ranking in other categories
Threat Deception Platforms (6th)
Microsoft Defender for Offi...
Ranking in Advanced Threat Protection (ATP)
2nd
Average Rating
8.4
Reviews Sentiment
6.8
Number of Reviews
60
Ranking in other categories
Email Archiving (1st), Email Security (1st), Microsoft Security Suite (10th), Secure Email Gateway (SEG) (1st)
 

Mindshare comparison

As of February 2026, in the Advanced Threat Protection (ATP) category, the mindshare of Fortinet FortiSandbox is 5.2%, down from 8.1% compared to the previous year. The mindshare of Microsoft Defender for Office 365 is 8.3%, down from 16.2% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Advanced Threat Protection (ATP) Market Share Distribution
ProductMarket Share (%)
Microsoft Defender for Office 3658.3%
Fortinet FortiSandbox5.2%
Other86.5%
Advanced Threat Protection (ATP)
 

Featured Reviews

AN
Security Manager at a computer software company with 11-50 employees
Advanced sandboxing has protected users from zero-day threats and has simplified secure file scanning
The smooth integrations between Fortinet FortiSandbox and other Fortinet solutions such as FortiWeb and FortiFirewall and with other Fortinet environments are what I really appreciate. We have minimum false positives during threat detection. Our clients have not given negative feedback from detection. As you know, it still needs some tuning after implementation. However, we never receive negative feedback for many false positives during implementation.
Emeka Ndulu - PeerSpot reviewer
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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881,757 professionals have used our research since 2012.
 

Top Industries

By visitors reading reviews
Government
9%
Comms Service Provider
9%
Computer Software Company
9%
Financial Services Firm
8%
Computer Software Company
13%
Financial Services Firm
8%
Manufacturing Company
8%
Comms Service Provider
6%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business15
Midsize Enterprise13
Large Enterprise9
By reviewers
Company SizeCount
Small Business23
Midsize Enterprise10
Large Enterprise31
 

Questions from the Community

What do you like most about Fortinet FortiSandbox?
The real-time analysis capability of FortiSandbox is beneficial for email analysis.
What is your experience regarding pricing and costs for Fortinet FortiSandbox?
I think it's affordable. For the six to seven months of usage, the cost has been reasonable.
What needs improvement with Fortinet FortiSandbox?
We sometimes face a delay in email scanning due to not having multiple virtual machines. Improvements could be made in dynamic scanning, scanning all email components such as URLs and attachments, ...
What needs improvement with Microsoft Defender for Office 365?
The inbuilt analysis of false positives can be faster. It's not slow, but it can be faster.
What is your primary use case for Microsoft Defender for Office 365?
My use case for Microsoft Defender for Office 365 is for email protection, safe links, protection of links, documents, protecting my documents, and protecting attachments. I also use it to conduct ...
 

Also Known As

FortiSandbox
MS Defender for Office 365
 

Overview

 

Sample Customers

Lush, Barnabas Health, Options, Riverside Healthcare, Hillsbourough County Schools, Columbia Public Schools, Schiller AG
Microsoft Defender for Office 365 is trusted by companies such as Ithaca College.
Find out what your peers are saying about Fortinet FortiSandbox vs. Microsoft Defender for Office 365 and other solutions. Updated: February 2026.
881,757 professionals have used our research since 2012.