Try our new research platform with insights from 80,000+ expert users

Microsoft Defender for Office 365 vs The NodeZero Platform by Horizon3.ai 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 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)
The NodeZero Platform by Ho...
Ranking in Advanced Threat Protection (ATP)
13th
Average Rating
9.0
Reviews Sentiment
5.7
Number of Reviews
11
Ranking in other categories
Vulnerability Management (9th), Penetration Testing Services (1st), Breach and Attack Simulation (BAS) (2nd), Risk-Based Vulnerability Management (5th)
 

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 The NodeZero Platform by Horizon3.ai is 0.5%, up from 0.0% 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%
The NodeZero Platform by Horizon3.ai0.5%
Other89.8%
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.
SH
Chief Information Officer at a construction company with 1,001-5,000 employees
Has unified our IT teams by providing clear visibility into network vulnerabilities and accelerated remediation with real-world attack testing
One of the things that we've shared with Horizon is just the reporting. They've made a lot of changes over time, but when examining computers, most average normal people don't look at a computer and identify it as 114.82.117.180. They identify it as 'the printer for accounting.' When many of the reports give the very detailed technical IP address or serial number, that's really not helpful for anyone other than the person, the hands-on person that's trying to remediate it. All the managers, all the leaders, having information in that format isn't helpful. Being able to have information about what those devices are would be very helpful. There's a technical reason they can't just have an easy button because some people have really complicated networks. When examining things for the average company, the average executive, that 114 number, there's only one of those. But if examining an AT&T or a Walmart, it isn't unique. They haven't solved that problem. But for the 90% of companies, being able to have just a human readable name for all devices on your network in all of the reports all of the time would be the most beneficial.

Quotes from Members

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

Pros

"The feature of Microsoft Defender for Office 365 that I like the most is probably the email features specifically, because those are the ones that a typical end user will accidentally click on a link not knowing what it is, and it'll catch it, and then it'll feed it over to Defender and stop the attack from happening before it actually can."
"The most valuable feature is the integration. It's a single console, so we don't have to switch around between multiple products. Another valuable feature is the ease of operations and maintenance."
"The most valuable aspect of Microsoft Defender for Office 365 is its ability to protect us from malware."
"The two main features that prove most beneficial for us are URL scanning and attachment scanning."
"It’s easy to handle integrations, and we don't need a lot of people in our IT team."
"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."
"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."
"The features I appreciate most about Microsoft Defender for Office 365 are admin notifications for potential threats along with protecting our Microsoft apps such as Outlook from potential phishing attacks."
"We experienced a threat that could have severely crippled us, but we were able to shut it down before it escalated, thanks to internal vulnerability testing and addressing critical vulnerabilities using their tool."
"Honestly, it's one of the most transformational technologies we've implemented in our company."
"Overall, I'd rate NodeZero at nine to 9.5 out of ten."
"The NodeZero Platform is amazing; what I love most about it is that it's automated and comparable to the manual pen testing we did with a third-party company, but with the added benefit of unlimited retesting to validate fixes."
"The NodeZero Platform's real attack capabilities help identify vulnerabilities on my on-premise systems by adding an element of validation and offensive security testing on top of known vulnerabilities. The feature that allows security teams to fix and retest vulnerabilities instantly is very useful, even though it may not happen literally 'instantly.' It's a necessary tool for any organization to understand whether vulnerabilities are genuinely exploitable by attackers. With its near-real-time testing capabilities, it's an essential part of any security portfolio."
"The NodeZero Platform's real attack capabilities help in identifying vulnerabilities on our on-prem systems because it provides actual vulnerabilities by attacking our systems."
"Penetration testing and scans are useful features."
"I rate the stability of the NodeZero Platform a ten out of ten."
 

Cons

"Several simulation options are available within 365, and the phishing simulation could be better."
"There is room for improvement in terms of reporting."
"If you look at other products, such as Wiz or Palo Alto's cloud, because they also have similar components in terms of how they protect cloud infrastructure or enable cloud security, Microsoft Defender for Office 365 is not up to that extent."
"The certification training for Defender for 365 needs to be deeper and incorporate Sentinel. I took all the security courses except one, and Sentinel isn't included."
"Microsoft Defender for Office 365 is not up to the mark in comparison with Wiz or Palo Alto."
"There's room for improvement regarding the time frame for retrieving emails."
"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."
"The inbuilt analysis of false positives can be faster. It's not slow, but it can be faster."
"The areas for improvement for The NodeZero Platform involve integration and automation. It would be beneficial if it could integrate directly with vulnerability management tools that would allow the platform to automatically import data, identify vulnerable systems, and test targets immediately, potentially even enabling automated feedback loops for rescanning since the process is currently manual."
"I think The NodeZero Platform could improve by leveraging GPUs for password cracking, which would be pretty good."
"The only issue we’ve encountered is that sometimes the scans take a long time to complete."
"One of the areas where improvement is needed is in the visibility and reporting for large enterprises."
"The speed of the scans takes some time, but in my opinion, it is not surprising for what it is doing."
"You need to be cautious about what it scans, as it could potentially cause issues."
"They've added a chatbot which isn't particularly useful, but when it can't answer questions, it forwards messages to human support."
"Sometimes even their support doesn't know why we're seeing certain issues."
 

Pricing and Cost Advice

"Microsoft Defender for Office 365 comes with Microsoft Windows. It is free with the operating system."
"It's a user-base subscription."
"The product is expensive."
"It is much more expensive than using another solution because we have had to include some options and upgrade our license."
"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 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."
"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 pricing is normal. Considering its popularity, it's not overpriced."
Information not available
report
Use our free recommendation engine to learn which Advanced Threat Protection (ATP) solutions are best for your needs.
879,422 professionals have used our research since 2012.
 

Top Industries

By visitors reading reviews
Computer Software Company
15%
Financial Services Firm
8%
Manufacturing Company
8%
Comms Service Provider
6%
Computer Software Company
10%
Manufacturing Company
8%
Educational Organization
8%
Comms Service Provider
8%
 

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 Business6
Midsize Enterprise1
Large Enterprise4
 

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 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 do you like most about Horizon3.ai?
Penetration testing and scans are useful features.
What needs improvement with Horizon3.ai?
I think The NodeZero Platform could improve by leveraging GPUs for password cracking, which would be pretty good.
What is your primary use case for Horizon3.ai?
We use The NodeZero Platform for control validation and we are also looking for the likelihood of vulnerabilities.
 

Also Known As

MS Defender for Office 365
Horizon3.ai
 

Overview

 

Sample Customers

Microsoft Defender for Office 365 is trusted by companies such as Ithaca College.
Government agencies, Defense Industrial Base organizations, and enterprises in regulated industries such as finance, healthcare, manufacturing, and criticalinfrastructure rely on NodeZero to meet rigorous security and compliance requirements with continuous, scheduled, and on-demand testing.
Find out what your peers are saying about Microsoft Defender for Office 365 vs. The NodeZero Platform by Horizon3.ai and other solutions. Updated: December 2025.
879,422 professionals have used our research since 2012.