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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:
 

Categories and Ranking

Fortinet FortiSandbox
Ranking in Advanced Threat Protection (ATP)
3rd
Average Rating
8.2
Reviews Sentiment
7.1
Number of Reviews
38
Ranking in other categories
Threat Deception Platforms (7th)
Microsoft Defender for Offi...
Ranking in Advanced Threat Protection (ATP)
2nd
Average Rating
8.4
Reviews Sentiment
7.0
Number of Reviews
52
Ranking in other categories
Email Archiving (1st), Email Security (1st), Microsoft Security Suite (10th), Secure Email Gateway (SEG) (1st)
 

Mindshare comparison

As of August 2025, in the Advanced Threat Protection (ATP) category, the mindshare of Fortinet FortiSandbox is 9.4%, down from 9.8% compared to the previous year. The mindshare of Microsoft Defender for Office 365 is 8.0%, down from 13.2% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Advanced Threat Protection (ATP)
 

Featured Reviews

Abdelhamid Saber - PeerSpot reviewer
Enhanced network security with adaptable integration and really good support
We use FortiSandbox for scanning files and images that pass through our networks. It integrates with different devices, such as five adapters and other Fortinet devices It is time-saving and more secure. It saves us from a lot of antivirus and anti-malware issues. The adapter is beneficial as it…
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.

Quotes from Members

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

Pros

"Performance is a valuable feature."
"The GUI makes administration tasks straightforward."
"The most valuable feature is the protection and the way it works, the technology is what I like the most."
"Fortinet FortiSandbox is scalable."
"Fortinet FortiSandbox is faster than other sandbox solutions."
"It is a stable solution."
"The adapter is beneficial as it allows integration with various devices, not just Fortinet."
"Fortinet FortiSandbox's most valuable feature is the security it provides against threats, such as ransomware. Additionally, it integrates well with APIs."
"The most valuable feature of Microsoft Defender for Office 365 is its spam filter."
"We use Microsoft Defender for its ability to integrate with existing business technologies, which is beneficial for protecting business areas."
"One of the best features of the tool is its capability to aggregate insights from different workloads, basically from the Office 365 and endpoints part."
"My experience with customer support and technical support for Microsoft Defender for Office 365 has been excellent."
"Defender helps us prioritize threats across our organization."
"I would say that 90% of the spam and phishing attack emails get blocked right off the bat."
"The ability to respond to threats if very important."
"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."
 

Cons

"It can be difficult if you need to use the Command Line Interface (CLI). It's much easier if you only have to deal with the GUI."
"The initial setup is not too complex but could be easier."
"The reporting tools could be improved in Fortinet FortiSandbox."
"I don't know if it is viable to do an improvement like this. When there are passwords in the password-protected files, it can't scan them or do things like this. I don't know if an algorithm or something else could make it better. Nowadays, many legitimate office documents have passwords."
"The area I would like this solution to be improved in is the integrations for Sandbox with AI and big data ML mechanisms. I think this would be a practical improvement."
"In future releases, I would like to see more automation capabilities."
"Most people are confused about how to use the right integration of the right Fortinet product."
"Product could include a user interface and be made simpler for customers to configure."
"About eight months ago, we started to measure the quantity of phishing and spam that we have been receiving, and it has been increasing a lot. That means that protection for our email is not as good as we were expecting."
"The custom alerts have to improve a lot."
"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."
"You should be able to deploy Defender for every subscription without the need to add servers."
"We need a separate license and we don't know how to get the license that is required."
"We still see many false positives from time to time with Microsoft Defender for Office 365, so it would be good if we can reduce those false positives and provide better workflows for our end users, as sometimes they may not know what to do when they encounter a false positive."
"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."
"Several simulation options are available within 365, and the phishing simulation could be better."
 

Pricing and Cost Advice

"The solution is not expensive at all."
"Altogether, it is about €10,000 for the Sandbox and Email Gateway."
"We are on an annual license to use the solution. We have an additional feature that is integrated with S5, which is working well."
"Fortinet FortiSandbox is a nominally priced product, so I would not say that it is a very cheap tool."
"There is a license to use this solution."
"The price of Fortinet FortiSandbox is not expensive."
"The solution is unavailable at a lower cost and can be difficult to deploy."
"I rate the product's pricing a five or six on a scale of one to ten, where one is low, and ten is high."
"The product is very expensive."
"The product is 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."
"The pricing has become expensive."
"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."
"Microsoft Defender for Office 365 comes with Microsoft Windows. It is free with the operating system."
"For large enterprise organizations, they can definitely afford it, but for small and medium organizations, they might struggle to cover the expenses."
"It is much more expensive than using another solution because we have had to include some options and upgrade our license."
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Top Industries

By visitors reading reviews
Computer Software Company
12%
Government
11%
Financial Services Firm
9%
Comms Service Provider
7%
Computer Software Company
16%
Financial Services Firm
8%
Manufacturing Company
8%
Government
6%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
 

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 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?
Microsoft is quite affordable with a lot of features available for any size organization.
What needs improvement with Microsoft Defender for Office 365?
Microsoft could improve by offering recommendations for domain spoofing attacks, especially scenarios where DNS records like SPF, DKIM, and DMARC are not properly published. It's essential to enhan...
 

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: July 2025.
864,155 professionals have used our research since 2012.