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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)
3rd
Average Rating
8.4
Reviews Sentiment
6.8
Number of Reviews
61
Ranking in other categories
Email Archiving (1st), Email Security (2nd), Microsoft Security Suite (9th), Secure Email Gateway (SEG) (2nd)
Symantec Advanced Threat Pr...
Ranking in Advanced Threat Protection (ATP)
26th
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 August 2026, in the Advanced Threat Protection (ATP) category, the mindshare of Microsoft Defender for Office 365 is 6.4%, down from 13.7% compared to the previous year. The mindshare of Symantec Advanced Threat Protection is 2.0%, up from 1.6% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Advanced Threat Protection (ATP) Mindshare Distribution
ProductMindshare (%)
Microsoft Defender for Office 3656.4%
Symantec Advanced Threat Protection2.0%
Other91.6%
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.
Dennis O'Reilly - PeerSpot reviewer
Cyber SecOps Principal at Dotcom Security
Provides end-to-end antivirus protection and has good stability
Symantec Endpoint Protection provides end-to-end protection. Along with antivirus protection, it has a lot of key areas, including intrusive prevention, firewall features, and application and device control. It can integrate with other Broadcom solutions, such as Symantec Messaging Gateway and Symantec DLP. If you want to send an email, it gets scanned through endpoint protection and DLP. We get all Symantec functionality in a single pane.

Quotes from Members

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

Pros

"The deployment capability is a great feature."
"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."
"The most valuable aspect of Microsoft Defender for Office 365 is its ability to protect us from malware."
"Microsoft Defender for Office 365 helps people to work remotely. It is a secure solution. We don't need to use our company's computers or get VPN connections to the networks. I can control how they share screens and what they send to the devices. It keeps our organizations confidential and sensitive information safe."
"Some of the valuable features on the email side are anti-phishing, anti-malware, and Safe Links."
"The most valuable feature is protection against malicious links, fishing, and impersonation. You can train people to be aware of these threats, but they're not always careful. When they're using their phones between meetings, they click on a link, and it's game over."
"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."
"I like its investigation capabilities, as that is what is most important to me. It is fairly simple with a user-friendly interface."
"All of the solution's features are quite valuable for us, and we especially like the threat protection it provides."
"They manage to solve detection quite nicely, with rather elaborate detection compared to other providers, and Symantec also provides a useful set of information linked to each of the attacked computers."
"The product integrates well with our systems, and we have not encountered any problems."
"Real-time threat analysis is quick and takes action on threats immediately."
"You don't have to buy a separate email security platform. You can enable that using their endpoint, and I like that. You don't have to have two agents running on the same box."
"The Application Control code and the easy integration are valuable features."
"Currently we have 800-plus nodes connected with this solution, without any issues. The solution is scalable."
"They have a very simple and easy implementation; they have been around for a long time, and they have been very easy to deploy, support, and manage."
 

Cons

"Microsoft Defender for Office 365 should be more proactive."
"Microsoft should provide more documentation for users so they can self-educate. I would like to see more documentation for advanced security features."
"We need to be able to whitelist data at the backend."
"Specifically, within Microsoft Defender for Office 365, I want it to improve the DLP capabilities."
"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 XDR dashboard has room for improvement."
"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?"
"From a development point of view, if I wanted to do development on my actual machine where Defender is, the organization can set certain policies or Defender makes that prohibitive."
"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."
"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 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."
"Scalability could be better."
"It also needs network-based threat protection for shared folders and files."
"The endpoint protection looks old."
"One area for improvement could be the pricing model."
 

Pricing and Cost Advice

"It's a user-base subscription."
"It is much more expensive than using another solution because we have had to include some options and upgrade our license."
"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."
"From the pricing point of view, like any other product in the market, there is scope for negotiation."
"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."
"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."
"The license is expensive because the cost is based on the number of users."
"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."
"Symantec Endpoint Protection has an average price."
"Pricing is good. It is nice to have a great product at a fair price."
"The pricing of this solution is inexpensive and affordable."
"The price is quite expensive."
"Symantec Advanced Threat Protection's pricing is comparable."
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Top Industries

By visitors reading reviews
Computer Software Company
11%
Manufacturing Company
9%
Financial Services Firm
9%
Comms Service Provider
7%
Financial Services Firm
11%
Outsourcing Company
11%
Manufacturing Company
10%
Marketing Services Firm
9%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business24
Midsize Enterprise11
Large Enterprise32
By reviewers
Company SizeCount
Small Business9
Midsize Enterprise3
Large Enterprise13
 

Questions from the Community

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 a standalone product. It's very competitive compared to what competitors are ch...
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 for malware. We are seeing a lot more malware-less emails that Defender for Offi...
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 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.
What advice do you have for others considering Symantec Advanced Threat Protection?
Symantec ATP has proven to be a reliable and effective solution. I rate it a nine out of ten.
 

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: August 2026.
909,563 professionals have used our research since 2012.