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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)
1st
Average Rating
8.4
Reviews Sentiment
7.1
Number of Reviews
49
Ranking in other categories
Email Security (1st), Microsoft Security Suite (11th)
Symantec Advanced Threat Pr...
Ranking in Advanced Threat Protection (ATP)
16th
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 May 2025, in the Advanced Threat Protection (ATP) category, the mindshare of Microsoft Defender for Office 365 is 8.8%, down from 14.2% compared to the previous year. The mindshare of Symantec Advanced Threat Protection is 2.1%, down from 2.3% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Advanced Threat Protection (ATP)
 

Featured Reviews

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.
Dennis O'Reilly - PeerSpot reviewer
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 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."
"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 individuals within our organization who are affected."
"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."
"Microsoft Defender for Office 365 is a stable solution."
"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."
"Microsoft Defender for Office 365 facilitates efficient management and updates through the cloud. We do not have to worry about incompatibilities. It just works."
"The product is not resource-intensive."
"The email protection is excellent, especially in terms of anti-phishing policies."
"It has certainly helped out our audit efforts because we each stay compliant in terms of various security standards."
"Technical support is very responsive. You just have to open a ticket. They respond in a timely manner. Their response is good. I'm satisfied."
"The most valuable feature is Click-time URL protection."
"All of the solution's features are quite valuable for us. We especially like the threat protection it provides."
"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."
"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."
 

Cons

"The changes to customer service, specifically the new model for support agreements, are not favorable."
"Microsoft Defender for Office 365 could improve by giving customers information on techniques to prevent threats. For example, information about best practices on how to protect their own devices against hackers and scammers, such as educational information or training. This would help others have a better understanding of cyber security. Additionally, there can be more security features added."
"Microsoft sometimes has downtime, and we'll get several incidents coming in back to back. We have a huge backlog of notifications, many of which may be false positives. However, there might be serious alerts, so we can't risk dismissing all of them at once."
"There's room for improvement regarding the time frame for retrieving emails."
"Configuring the default strategies and policies in Microsoft Defender for Cloud Apps generates a lot of noise and false positives."
"I am generally satisfied with how it currently is. If I could improve anything, I would reduce the cost."
"You should be able to deploy Defender for every subscription without the need to add servers."
"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."
"The support has dropped down to a five out of ten."
"The support for new OSs and older OSs could be a little tighter. They need to be more upfront about what protection services they're going to provide on new OSs. I haven't seen the Windows 11 version out yet. It is either already released in Beta, or the Beta will be released soon. There could be a little bit more advanced updates on what they're doing to help protect Windows 11 environments. They can let us know in advance so that we know it is going to be protected. We can't roll out the new OS without putting end-point protection on it. So, they should tell us what is their support model for that, and what are they doing to protect Windows 11. They're not telling me, and that's a criticism. The same issue is applicable to all the other antivirus tools. It is not just Symantec; all of them have this problem."
"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 limits with respect to blocking files by hash value or blocking IP addresses, and these limits should be removed."
"Symantec appliances need improvement. The whole appliance environment is a robust system and it needs a massive amount of storage space. If you have to increase or speed up the background storage it's a pretty complicated process. The scalability and sizing is critical, and if you do it wrong you run into issues pretty quickly."
"They could enhance the solution to work across all devices, including Android, iOS, and Mac, and make it more user-friendly."
"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 security features need to be improved."
 

Pricing and Cost Advice

"Microsoft Defender for Office 365 is an add-on to the Office license. Many customers are purchasing this solution."
"The pricing has become expensive."
"I know that the product is incredibly expensive."
"The product is very expensive."
"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."
"For large enterprise organizations, they can definitely afford it, but for small and medium organizations, they might struggle to cover the expenses."
"From the pricing point of view, like any other product in the market, there is scope for negotiation."
"Microsoft Defender is expensive. I typically recommend it only if clients have the budget. Otherwise, I would suggest an alternative."
"Pricing is good. It is nice to have a great product at a fair price."
"Symantec Advanced Threat Protection's pricing is comparable."
"The price is quite expensive."
"The pricing of this solution is inexpensive and affordable."
"Symantec Endpoint Protection has an average price."
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Top Industries

By visitors reading reviews
Computer Software Company
16%
Financial Services Firm
9%
Manufacturing Company
8%
Government
6%
Educational Organization
73%
Financial Services Firm
6%
Manufacturing Company
3%
University
2%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
 

Questions from the Community

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?
Money-wise, it is a part of the Office 365 ( /products/office-365-reviews ) suite, making it slightly more expensive compared to Trend Micro. Although Defender is free, you have to pay separately f...
What needs improvement with Microsoft Defender for Office 365?
The main area for improvement is simplifying the implementation and rollout process. There are many conditions to be met, making it challenging to ensure every system is protected. Troubleshooting ...
What do you like most about Symantec Advanced Threat Protection?
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 devic...
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...
 

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: April 2025.
849,963 professionals have used our research since 2012.