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Microsoft Defender for Office 365 vs Microsoft Purview Insider Risk Management comparison

 

Comparison Buyer's Guide

Executive Summary

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 Microsoft Security Suite
11th
Average Rating
8.2
Reviews Sentiment
7.1
Number of Reviews
48
Ranking in other categories
Email Security (1st), Advanced Threat Protection (ATP) (1st)
Microsoft Purview Insider R...
Ranking in Microsoft Security Suite
30th
Average Rating
7.6
Reviews Sentiment
6.7
Number of Reviews
3
Ranking in other categories
Insider Risk Management (3rd)
 

Mindshare comparison

As of April 2025, in the Microsoft Security Suite category, the mindshare of Microsoft Defender for Office 365 is 2.3%, down from 2.9% compared to the previous year. The mindshare of Microsoft Purview Insider Risk Management is 0.6%, up from 0.3% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Microsoft Security Suite
 

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.
DC
The solution's graphing is highly specific and useful
Implementing policies in the solution isn't easy, and it takes time. For example, you need to use some secrets in Windows or Mac to execute your policies, and you can assign these policies with Microsoft Intune. However, when you execute a policy, you still need to wait up to two days to see alerts. Some of our customers aren't happy because they didn't expect it to take so long. They're satisfied once it starts working because they see the alerts and graphs. The user interface also isn't user-friendly. When we introduce Insider Risk Management to our clients, they often find it difficult to understand. There is too much information, and the UI is not scalable. Also, entry-level IT technicians are not always interested in learning something new. It should be clearer and easier to understand. Microsoft is still working on machine learning and AI components. They're constantly updating the product. However, from my experience, most of my customers are not ready or able to use the AI solution. They are creating some project plans and specific policies. They don't want to see dozens of alerts when they use Microsoft's recommendations or the AI-based solution.

Quotes from Members

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

Pros

"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 email protection is excellent, especially in terms of anti-phishing policies."
"I would say that 90% of the spam and phishing attack emails get blocked right off the bat."
"The benefit that stands out to me is the ability for multiple individuals to collaborate simultaneously within the same document. Additionally, there is the option to save the document directly in the integrated OneDrive or SharePoint."
"We use Microsoft Defender for its ability to integrate with existing business technologies, which is beneficial for protecting business areas."
"The most valuable feature of Microsoft Defender for Office 365 is its spam filter."
"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."
"There are several features that I consider valuable."
"Insider Risk Management's graphing is highly specific and useful. You can see the last six months of data for the Microsoft tenant. You can easily find what you need. For example, you can filter for alerts about devices, emails, etc."
"The best thing about Purview is that it's easy to integrate with our day-to-day environment. We have Active Directory, and Word and Excel. Using a third-party vendor and trying to integrate with our existing environment would be much more challenging."
"Microsoft Purview Insider Risk Management was helpful in performing investigations after alerts were received."
 

Cons

"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."
"We noticed that from time to time, Microsoft's stability does have problems. Sometimes the service goes up and down. Sometimes they change without prior notice."
"Microsoft needs to broaden its global support presence by establishing teams of subject-matter experts in all regions."
"We need to be able to whitelist data at the backend."
"Microsoft should provide more documentation for users so they can self-educate. I would like to see more documentation for advanced security features."
"Microsoft Defender for Office 365's Mac functionality requires improvement to deliver the same level of protection found on Windows devices."
"Microsoft Defender for Office 365 should be more proactive."
"You should be able to deploy Defender for every subscription without the need to add servers."
"The reporting capabilities sometimes leave a little to be desired. It could be improved in terms of producing reports to provide information to the C-suite or others."
"The user interface also isn't user-friendly. When we introduce Insider Risk Management to our clients, they often find it difficult to understand. There is too much information, and the UI is not scalable. Also, entry-level IT technicians are not always interested in learning something new. It should be clearer and easier to understand."
"For certain things, you need to install an agent. I understand it's for integrity, but if there could be a clientless solution for certain aspects, it would make life easier."
 

Pricing and Cost Advice

"It is much more expensive than using another solution because we have had to include some options and upgrade our license."
"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."
"I know that the product is incredibly expensive."
"The pricing is normal. Considering its popularity, it's not overpriced."
"The product is very 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."
"Microsoft Defender for Office 365 is an add-on to the Office license. Many customers are purchasing this solution."
"It's a user-base subscription."
Information not available
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Top Industries

By visitors reading reviews
Computer Software Company
16%
Financial Services Firm
9%
Manufacturing Company
8%
Government
6%
Computer Software Company
29%
Financial Services Firm
12%
Government
7%
Manufacturing Company
6%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
No data available
 

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?
I don't have detailed specifics on pricing, setup cost, or licensing.
What needs improvement with Microsoft Defender for Office 365?
I am generally satisfied with how it currently is. If I could improve anything, I would reduce the cost.
What needs improvement with Microsoft Purview Insider Risk Management?
The reporting capabilities sometimes leave a little to be desired. It could be improved in terms of producing reports to provide information to the C-suite or others.
What is your primary use case for Microsoft Purview Insider Risk Management?
The primary use case for Microsoft Purview Insider Risk Management was data loss prevention. This was my main objective.
What advice do you have for others considering Microsoft Purview Insider Risk Management?
I would recommend Microsoft Purview Insider Risk Management to others. I would rate the overall solution as a nine.
 

Also Known As

MS Defender for Office 365
Microsoft Insider Risk Management
 

Overview

 

Sample Customers

Microsoft Defender for Office 365 is trusted by companies such as Ithaca College.
Information Not Available
Find out what your peers are saying about Microsoft Defender for Office 365 vs. Microsoft Purview Insider Risk Management and other solutions. Updated: March 2025.
847,646 professionals have used our research since 2012.