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Kaspersky Security for Internet Gateway vs Microsoft Defender for Office 365 comparison

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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

Kaspersky Security for Inte...
Ranking in Email Security
30th
Ranking in Advanced Threat Protection (ATP)
30th
Ranking in Secure Email Gateway (SEG)
11th
Average Rating
8.6
Reviews Sentiment
6.4
Number of Reviews
9
Ranking in other categories
Anti-Malware Tools (37th)
Microsoft Defender for Offi...
Ranking in Email Security
2nd
Ranking in Advanced Threat Protection (ATP)
3rd
Ranking in Secure Email Gateway (SEG)
2nd
Average Rating
8.4
Reviews Sentiment
6.8
Number of Reviews
61
Ranking in other categories
Email Archiving (2nd), Microsoft Security Suite (9th)
 

Mindshare comparison

As of October 2026, in the Email Security category, the mindshare of Kaspersky Security for Internet Gateway is 0.3%, up from 0.0% compared to the previous year. The mindshare of Microsoft Defender for Office 365 is 5.1%, down from 11.0% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Email Security Mindshare Distribution
ProductMindshare (%)
Microsoft Defender for Office 3655.1%
Kaspersky Security for Internet Gateway0.3%
Other94.6%
Email Security
 

Featured Reviews

reviewer2736225 - PeerSpot reviewer
Program Manager at a outsourcing company with 51-200 employees
Effective threat protection with room for cost and usability improvements
There are some drawbacks that I would mention. To be frank, enterprises always look for cost benefits, so Kaspersky could implement some price benefits. Additionally, regarding know-how, if I am an experienced person it's fine, but when someone novice is working with it, they need information about why certain actions are required. Security is a field that is very vast, and implications are not known to everyone. In future updates, a quick walk-through and know-how features would be beneficial, such as information text at relevant places. This will increase usability. Feature-wise, an impact analysis would be a really good addition.
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.

Quotes from Members

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

Pros

"When it comes to threat detection, it is very strict with file downloads and uploads. It sends reports and quarantines suspicious files."
"The most valuable feature of Kaspersky Security for Internet Gateway is the antivirus."
"The most valuable aspect for me is the user-friendly interface."
"I would recommend it to others as it's easy to use."
"The password thing is very good, and the overall URL protection."
"The most valuable features of this solution are its ease of use and operation efficiency."
"The most valuable features of the solution are the antivirus and child protection features."
"Kaspersky Security for Internet Gateway has positively impacted our organization by helping us control unwanted attacks and limiting our exposure to risks."
"It has helped us in improving our security posture; it detects any kind of attack or abnormal behavior in accessing the system and sends an alert to the administrator who can check, understand, and review on time to ensure that all activities are legit."
"We use Microsoft Defender for its ability to integrate with existing business technologies, which is beneficial for protecting business areas."
"My experience deploying Microsoft Defender for Office 365 was seamless."
"We have seen a return on investment because if we would have received a phishing email, Microsoft Defender for Office 365 would help out to detect the threat instead of crashing down the whole company."
"Defender has reduced the time our security team spends on tasks by 10 to 15 percent, allowing us to focus on other areas."
"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 feature I like the most about Microsoft Defender for Office 365 is that it typically runs in the background—you do not know it is there until you need to access it."
"The deployment capability is a great feature."
 

Cons

"It might be helpful to have notifications on mobile devices, especially if the same browser profile is used on both mobile and laptop."
"When I do a configuration, I do not know what implication it will have downstream."
"In different locations, they're priced differently, but that's mainly marketing rather than the product features."
"There is room for improvement in terms of the pricing."
"I believe the absence of a procedure is the main issue."
"The customer support of the product is an area with shortcomings where improvements are required."
"The initial setup of Kaspersky Security for Internet Gateway is complex. The full deployment took approximately two weeks."
"We need to be able to whitelist data at the backend."
"Sometimes, phishing emails manage to pass through the filter, so the system needs to enhance its phishing email detection capabilities."
"To improve Microsoft Defender for Office 365, it would be nice to have more accessibility for users to see on their end what they are doing that could cause a threat."
"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."
"Configuration requires going to a lot of places rather than just accessing one tab."
"Configuration at the mid-level could be improved for the support team."
"The product must provide better malware detection."
"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."
 

Pricing and Cost Advice

"I rate the product's price an eight on a scale of one to ten, where one is very cheap, and ten is very expensive."
"It is expensive."
"Personal computer licenses can be expensive if you were to scale the solution extensively. However, large companies will most likely use Endpoint solutions and not this one."
"The cost is relatively high, and as a licensed product, there are restrictions on the number of users permitted per license."
"I would rate the pricing a seven out of ten, with ten being very expensive and one being cheap. It's neither too cheap nor too expensive."
"I am okay with the pricing."
"I was working in the government and it was too expensive for us to use our Microsoft products."
"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."
"The pricing has become expensive."
"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."
"Microsoft Defender is expensive. I typically recommend it only if clients have the budget. Otherwise, I would suggest an alternative."
"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."
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Top Industries

By visitors reading reviews
Outsourcing Company
15%
Construction Company
13%
Manufacturing Company
11%
Computer Software Company
10%
Computer Software Company
11%
Manufacturing Company
10%
Financial Services Firm
8%
Comms Service Provider
8%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business6
Midsize Enterprise1
Large Enterprise2
By reviewers
Company SizeCount
Small Business24
Midsize Enterprise11
Large Enterprise32
 

Questions from the Community

What is your experience regarding pricing and costs for Kaspersky Security for Internet Gateway?
Regarding pricing, I'll be exactly on the brink, neither for it nor against it because being a small company, it's a slightly pricey solution. However, considering the advantages they bring, we are...
What is your primary use case for Kaspersky Security for Internet Gateway?
We work with a cloud solution. The product that we use is developed as a SaaS model. In this case, we work with AWS as our cloud provider. We use a public cloud. The tool is good, but they need to ...
What advice do you have for others considering Kaspersky Security for Internet Gateway?
That's a very generic feedback. I would not have much information about threat intelligence metrics through Kaspersky Security for Internet Gateway because I've not been monitoring it for quite som...
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.
 

Also Known As

No data available
MS Defender for Office 365
 

Overview

 

Sample Customers

Tael, Insolar, Goods.ru, Republic of Serbia
Microsoft Defender for Office 365 is trusted by companies such as Ithaca College.
Find out what your peers are saying about Kaspersky Security for Internet Gateway vs. Microsoft Defender for Office 365 and other solutions. Updated: September 2026.
915,533 professionals have used our research since 2012.