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Microsoft Defender for Office 365 vs Symantec Advanced Threat Protection 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

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)
Symantec Advanced Threat Pr...
Ranking in Advanced Threat Protection (ATP)
21st
Average Rating
7.8
Reviews Sentiment
7.1
Number of Reviews
16
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of January 2026, in the Advanced Threat Protection (ATP) category, the mindshare of Microsoft Defender for Office 365 is 9.7%, down from 16.8% compared to the previous year. The mindshare of Symantec Advanced Threat Protection is 1.9%, up from 1.6% 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 3659.7%
Symantec Advanced Threat Protection1.9%
Other88.4%
Advanced Threat Protection (ATP)
 

Featured Reviews

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.
TapabrataSamanta - PeerSpot reviewer
Lead Architect at Zones
Reliable platform with effective integration capabilities
Our primary use case for the product is to provide advanced threat protection to our clients, primarily in the banking and financial sectors Symantec ATP has been beneficial in ensuring robust security for our clients. Its effectiveness in detecting and mitigating threats has improved customer…

Quotes from Members

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

Pros

"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."
"The initial setup was easy."
"The solution is very easy to use. All you have to do is to assign the license to the end-user and it's done. The customer will only have the feature activated, and the solution will monitor the emails to determine if they are a threat or not."
"The technical support is good and quick to resolve issues."
"The DLP feature of Microsoft Defender for Office 365 is valuable, and we also use the DLP feature for email real-time detection."
"At the moment we are satisfied with this product. It's a stable, scalable, and resilient solution for us."
"The most valuable feature of Microsoft Defender for Office 365 is data backups that we can provide through ticket requests."
"The two main features that prove most beneficial for us are URL scanning and attachment scanning."
"The Application Control code and the easy integration are valuable features."
"The most valuable feature is NetFlow threat protection."
"The technical support services are excellent."
"They manage to solve detection quite nicely. There is some rather elaborate detection compared to other providers."
"Currently we have 800-plus nodes connected with this solution, without any issues. The solution is scalable."
"Technical support has been helpful and responsive."
"It has certainly helped out our audit efforts because we each stay compliant in terms of various security standards."
"The great advantage in using this product is it creates multiple services."
 

Cons

"The inbuilt analysis of false positives can be faster. It's not slow, but it can be faster."
"It is not up to the mark in comparison with Wiz or Palo Alto."
"One area for improvement is integration. For example, when it comes to external SaaS platforms, we were not able to get a lot of information on integrations with such apps for security and authentication."
"It would be better if it were more scalable. It depends on the architecture, but we would like to make it more scalable for both data centers."
"The inbuilt analysis of false positives can be faster. It's not slow, but it can be faster."
"The only thing they should improve is the licensing model. They should stop changing it. A year ago, the five features I mentioned were included in one product. Now, three of them are bundled into one product, and you have to pay extra for the other two. I don't mind paying extra, but I don't want them to change it every year or every six months. I need to know what I'm looking at and not worry about it next year."
"Microsoft Defender for Office 365 is not up to the mark in comparison with Wiz or Palo Alto."
"Microsoft security solutions work as expected. They are constantly updating the solutions to make them better. At the same time, the changes can impact a customer's environment, and we need to adjust settings. Sometimes we aren't aware of the changes, and nothing is pushed from the backend automatically."
"The security features need to be improved."
"They could enhance the solution to work across all devices, including Android, iOS, and Mac, and make it more user-friendly."
"Not ideal for advanced threat protection."
"The support has dropped down to a five out of ten."
"The administration interface needs a lot of improvement. It should be UI based, and simple. They need to improve it. It's pretty much not that friendly compared to what we were using as Bitdefender before. It's okay but is improving, actually."
"The cloud platform needs to have improvement in terms of the user interface and the different capabilities it has available. It needs to match the other leading next-gen EDR products that are available in the market. That's the reason why we are stepping away from Symantec. Their cloud environment is just generally lacking in comparison to others."
"It's a strange situation where the infrastructure of the consumer or customer is behind some kind of firewall and they have always used some kind of customized proxy. In this situation, the ATP has a very tough time to pass the information to the cloud and back. To fix, it requires a more elaborate and complex configuration for that particular case."
"There are some ‎features that would add value to this product. One of them would be a graphical presentation of threats that the system has encountered."
 

Pricing and Cost Advice

"The pricing has become expensive."
"I know that the product is incredibly expensive."
"The product is expensive."
"It's a user-base subscription."
"The license is expensive because the cost is based on the number of users."
"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."
"Compared to other brands, Microsoft Defender for Office 365's pricing is competitive."
"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."
"The price is quite expensive."
"Pricing is good. It is nice to have a great product at a fair price."
"Symantec Endpoint Protection has an average price."
"The pricing of this solution is inexpensive and affordable."
"Symantec Advanced Threat Protection's pricing is comparable."
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Top Industries

By visitors reading reviews
Computer Software Company
14%
Financial Services Firm
8%
Manufacturing Company
8%
Comms Service Provider
6%
University
9%
Manufacturing Company
9%
Financial Services Firm
9%
Insurance Company
6%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business23
Midsize Enterprise10
Large Enterprise31
By reviewers
Company SizeCount
Small Business9
Midsize Enterprise3
Large Enterprise13
 

Questions from the Community

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 ...
What is your experience regarding pricing and costs for Symantec Advanced Threat Protection?
The price is quite expensive because a different entity has taken over the company.
What needs improvement with Symantec Advanced Threat Protection?
One area for improvement could be the pricing model. Future releases could further enhance integration capabilities with other platforms and simplify the licensing model to compete more with Micros...
What is your primary use case for Symantec Advanced Threat Protection?
Our primary use case for the product is to provide advanced threat protection to our clients, primarily in the banking and financial sectors.
 

Also Known As

MS Defender for Office 365
No data available
 

Overview

 

Sample Customers

Microsoft Defender for Office 365 is trusted by companies such as Ithaca College.
ECI
Find out what your peers are saying about Microsoft Defender for Office 365 vs. Symantec Advanced Threat Protection and other solutions. Updated: December 2025.
881,114 professionals have used our research since 2012.