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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 two main features that prove most beneficial for us are URL scanning and attachment scanning."
"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."
"Does a thorough job of examining email and URLs for malicious content."
"Microsoft Defender for Office 365's most valuable features are safe attachments and safe links."
"One of our clients didn't have the budget to invest in a SOC team, but we deployed the solution for them, and they now run a SOC with only one analyst."
"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."
"It also gives me good visibility because, with Defender, I'm using a Microsoft product to defend Microsoft products. The integration was really seamless and I have wide visibility because it picks up almost everything. Literally, I can see almost every activity that happens, from the e-mail to the workstation itself."
"The product's scalability is good."
"The most valuable feature is Click-time URL protection."
"Currently we have 800-plus nodes connected with this solution, without any issues. The solution is scalable."
"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."
"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."
"Overall, the product supports everything already feature-wise, because it has email protection, monitoring detection, network intrusion detection, and 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 device control."
"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."
"The Application Control code and the easy integration are valuable features."
 

Cons

"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."
"There is room for improvement in terms of reporting."
"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."
"Its price should be improved. Its cost is a major concern for us."
"This is quite an expensive solution and understanding the pricing model and features is quite complicated and it can, in fact, be a nightmare when dealing with Microsoft."
"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."
"I think that Microsoft Defender for Office 365 could be improved if it could use VirusTotal to compare the programs or anything that I download."
"The phishing and spam filters could use some improvement."
"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."
"The administration interface needs a lot of improvement. It should be UI-based and simple."
"They could enhance the solution to work across all devices, including Android, iOS, and Mac, and make it more user-friendly."
"The support team that Symantec offers didn't know how to solve issues even though they referred to themselves as "engineers"."
"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."
"It also needs network-based threat protection for shared folders and files."
"Scalability could be better."
 

Pricing and Cost Advice

"I know that the product is incredibly expensive."
"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."
"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."
"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."
"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."
"It's a user-base subscription."
"Microsoft Defender for Office 365 is an add-on to the Office license. Many customers are purchasing this solution."
"From the pricing point of view, like any other product in the market, there is scope for negotiation."
"The pricing of this solution is inexpensive and affordable."
"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."
"Symantec Endpoint Protection has an average price."
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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%
Manufacturing Company
10%
Outsourcing 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: June 2026.
908,745 professionals have used our research since 2012.