Kiteworks vs Microsoft Defender for Office 365 comparison

Kiteworks and Microsoft are both solutions in the Email Security category. Kiteworks is ranked #26 with an average rating of 8.0, while Microsoft is ranked #2 with an average rating of 8.4. Kiteworks holds a 0.7% mindshare in Email Security, compared to Microsoft’s 6.9% mindshare. Additionally, 100% of Kiteworks users are willing to recommend the solution, compared to 96% of Microsoft users who would recommend it.

Comparison Buyer's Guide

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Executive SummaryUpdated on Dec 3, 2024

Kiteworks and Microsoft Defender for Office 365 are competing in the data security category. Microsoft Defender for Office 365 has the upper hand due to its comprehensive features that cater well to enterprise needs, while Kiteworks is notable for its strong user data confidentiality focus.

Features: Kiteworks offers secure file sharing, compliance, and centralized content governance. Microsoft Defender for Office 365 includes advanced threat protection, rich reporting, and investigation capabilities.

Room for Improvement: Kiteworks can enhance its threat detection capabilities, offer more flexible pricing, and improve integration with non-native applications. Microsoft Defender for Office 365 could benefit from simplifying its deployment process, optimizing its data loss prevention for diverse ecosystems, and enhancing user-friendliness for non-technical users.

Ease of Deployment and Customer Service: Kiteworks provides straightforward deployment with robust support, making it practical for businesses prioritizing quick setup. Microsoft Defender for Office 365 involves a more complex deployment but offers deep integration with Microsoft's ecosystem alongside comprehensive support resources.

Pricing and ROI: Kiteworks offers a clear pricing model that appeals to businesses with specific compliance needs, providing predictable ROI. Microsoft Defender for Office 365 may have higher initial costs but is perceived to deliver substantial long-term value through its extensive security features.

To learn more, read our detailed Kiteworks vs. Microsoft Defender for Office 365 Report (Updated: April 2026).

Buyer's Guide

Kiteworks vs. Microsoft Defender for Office 365

April 2026

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Helped 893,164 peers since 2012

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

Cloudflare One

Mindshare comparison

As of May 2026, in the Email Security category, the mindshare of Cloudflare One is 1.7%, up from 1.6% compared to the previous year. The mindshare of Kiteworks is 0.7%, up from 0.3% compared to the previous year. The mindshare of Microsoft Defender for Office 365 is 6.9%, down from 12.9% compared to the previous year. It is calculated based on PeerSpot user engagement data.

Email Security Mindshare Distribution
Product	Mindshare (%)
Microsoft Defender for Office 365	6.9%
Cloudflare One	1.7%
Kiteworks	0.7%
Other	90.7%

Email Security

Featured Reviews

Cobe Van Coller

Network Architect at IP Dimension

Cloud security has improved remote access and has reduced costs for smaller client sites

I have used Cloudflare One's Identity-Aware Proxy, and it is quite straightforward from what I have seen so far. The app registration on the Azure side integrates fully into Cloudflare, and I am very satisfied with that part because it is easy to set up. The integration of Cloudflare One's Secure Web Gateway and Zero Trust Network Access works without any issues. That part is pretty automatic, and if you complete the rest of the setup, it comes together by itself with no issues from my side. What makes it nice is that we can actually start replacing on-site firewalls at this stage for the smaller clients because it does not matter if they go to a coffee shop or work from home; they are still secured by the same connection. The hops get shorter and you get better latency. We have done testing to see if it is better. One thing that we did notice with our proof of concept with our current client is that they have people connecting from the UK. When they used their previous VPN solution, uploading CAD drawings and other files to the server took a long time. They mentioned that it is much quicker on Cloudflare One's solution. I definitely believe that is part of the improved performance, and I am satisfied with that as well. What is nice about Cloudflare One is that it makes the setup easier and also easier to train technicians to maintain it. Compared to legacy systems, we do not need to get fancy firewalls in place that are costly. That is definitely also a cost-saver with Cloudflare One.

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KishoreT-Review

Associate Consultant at a tech consulting company with 10,001+ employees

Streamlined global file sharing with user-friendly interface and self-service capabilities

I'm not a network expert, however, there must be some room for improvement. Perhaps there could be a notification to users about their bandwidth or network packet loss. If users receive such notifications, they can understand any disruptions are due to issues with their network or bandwidth rather than the site or Kiteworks. Additionally, I work from offshore India, and I told my client manager to communicate with the Kiteworks forum salesman regarding one feature. I noticed the Kiteworks login UI is very basic, lacking customization. Allowing more HTML tags to add hyperlinks or user-friendly information on the home page would be very useful.

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Emeka Ndulu

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.

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Quotes from Members

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

Pros

"The best feature is rate limiting. If I'm expecting 500 visits per hour, Cloudflare will limit the requests if I suddenly get 50,000."

"The blocking feature is very good."

"Cloudflare Zero Trust Platform removes the risk of exposing the applications to the public."

"The tool also offers good scalability, and the dashboard, along with real-time analytics, is very good."

"Cloudflare DDoS mitigates DDoS attacks."

"I'm very satisfied with the environment and the dashboard."

"We mostly use Cloudflare WAF, and gets basic Cloudflaire DDoS, caching as extra bonus . We like the factor these features are all integrated into 1 console, simple to manage."

"It will take the blow rather than our applications should an attack occur."

More Cloudflare One pros

"The most valuable feature is the ability to allow end-users to manage their own information and data with minimal administration. That's the best feature from my perspective."

"It’s a great product that you should seriously consider and take the first step by training."

"The solution can be used remotely; it's easy to upload and share files."

"As a file-sharing application, it's an absolute 10 out of 10."

"The most useful feature of this solution is to share files with external parties and we can use this functionality to share files internally too."

"The most valuable aspect of Kiteworks is undoubtedly the private content network. This feature is particularly beneficial for us. Furthermore, it serves as a centralized platform that enables us to track and manage our information exchange."

"The solution removes the limitations with file attachment size that is found with regular email."

"The top two features are the two-factor authentication, which is pretty good. It's easily understood by the users. And their API is rather robust. We have numerous integrations that work off the API."

More Kiteworks pros

"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."

"Technical support is very good. They are knowledgeable and respond quickly."

"The two main features that prove most beneficial for us are URL scanning and attachment scanning."

"The solution is very easy to use. All you have to do is to assign the license to the end-user and it's done. The customer will only have the feature activated, and the solution will monitor the emails to determine if they are a threat or not."

"The insights provided with Microsoft Defender for Office 365 are helpful because it comes with the E5 license, and by default, we can use a lot of capabilities."

"The product is not resource-intensive."

"There are several features that I consider valuable."

"Safe attachments, safe links, policies, and the ability to protect from zero-day threats are the most valuable features."

More Microsoft Defender for Office 365 pros

Cons

"The pricing is an area that can be improved. Pricing, as far as I recall, was the source of our problems."

"There are premium tier live service and lower tier live service, so we opted for the lower tier. But there is no medium tier where we pay a little extra and get a bit more service. So if that can be improved."

"The initial onboarding was causing us some confusion."

"From a logging perspective, it is still a bit difficult to see exactly what users are being blocked with the current views."

"The software has automated alerts, but the automated alerts are not available in the mobile app."

"They don't have a person to provide support for customers using the solution under their free plan."

"When there are any dynamic changes in complex applications, the tool takes a lot of time, making its analytics-related area a major matter of concern where improvements are needed."

"Cloudflare DDoS has poor technical support."

More Cloudflare One cons

"In my experience, their technical support can be a little slow."

"There are always issues when there are bugs or upgrades. The challenge with upgrading is getting more storage from the customer. Every time we have a new version, it requires additional storage. This means that the customer would need to procure more storage for their server, which they don't like because it means additional cost to them. So, I think my request would be that the version upgrades don't require any significant storage requirement."

"I would like to see immediate releases of fixes because now it takes at least a week. If that time span can be reduced to one day or two days, that would be very helpful for users so that things are sorted and transactions work smoothly."

"File location could be improved."

"It would be nice if Kiteworks could provide a free version of the platform so that it could be used for a certain number of file transfers. We could be charged a fee if we exceeded the number of allotted file transfers."

"We have experienced some issues with stability due to bugs."

"I noticed the Kiteworks login UI is very basic, lacking customization. Allowing more HTML tags to add hyperlinks or user-friendly information on the home page would be very useful."

"There is no offboarding process for end-users in Kiteworks. It's a manual process. There is no automated syncing with LDAP and checking to see if the account is still active. It's a manual process to get people out of here, which isn't the best way."

More Kiteworks cons

"The inbuilt analysis of false positives can be faster. It's not slow, but it can be faster."

"This product's effectiveness could be improved, in terms of detecting unwanted spam or even malware between the emails, compared to other products."

"If I could improve anything, I would reduce the cost."

"About eight months ago, we started to measure the quantity of phishing and spam that we have been receiving, and it has been increasing a lot. That means that protection for our email is not as good as we were expecting."

"Microsoft Defender for Office 365 must improve the overall management style, including the GUI. It also needs to change the filters so that it is easy to whitelist and blacklist data."

"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."

"The only thing they should improve is the licensing model. They should stop changing it. A year ago, the five features I mentioned were included in one product. Now, three of them are bundled into one product, and you have to pay extra for the other two. I don't mind paying extra, but I don't want them to change it every year or every six months. I need to know what I'm looking at and not worry about it next year."

"The pre-sales cost calculations could be more transparent."

More Microsoft Defender for Office 365 cons

Pricing and Cost Advice

"The pricing of the solution is cheap. The licensing cost is also very low. I rate the cost and pricing a three out of ten."

"The price tag is no longer $200,000, but rather $300,000 to $400,000. It's twice."

"Cloudflare Zero Trust Platform's pricing is good."

"The solution is not that expensive."

"The pricing is somewhere in the middle. I would rate the pricing a seven out of ten."

"The solution's pricing lacks transparency."

"My company has to make yearly payments towards the licensing costs attached to the solution. There are no hidden charges apart from the licensing costs of the solution."

"The prices are slightly expensive."

"They changed it midstream. We were being charged a certain flat rate for SFTP traffic. For whatever reason, at the beginning of the year, our pricing changed, and we are now being charged more for using a feature of the product than we were when we first bought it. That has been our experience with billing. It turned out to be more expensive than when we started with it."

"The license management is changing and confusing. If I could make one change to it, it would be better license management through the API."

"The solution is very expensive because we are buying with Malaysian Ringgit and it's sold in US dollars."

"The price of Kiteworks is reasonable."

"I believe it's a little costly, but given the faith that we put into it from a security perspective to maintain the integrity of our patient information that is being transferred through this system, that's a small price to pay. So, on the surface, it might look like a lot of money, but depending on the need for security, which is where we feel it shines, it's okay price-wise."

"It is not really expensive. I mean, to me it's obviously expensive, but it's worth it."

"The pricing has become expensive."

"I was working in the government and it was too expensive for us to use our Microsoft products."

"The product is expensive."

"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."

"From the pricing point of view, like any other product in the market, there is scope for negotiation."

"I know that the product is incredibly expensive."

"For large enterprise organizations, they can definitely afford it, but for small and medium organizations, they might struggle to cover the expenses."

"The license is expensive because the cost is based on the number of users."

More Microsoft Defender for Office 365 pricing and cost advice

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Top Industries

By visitors reading reviews

Construction Company

20%

Comms Service Provider

10%

Financial Services Firm

Manufacturing Company

Financial Services Firm

13%

Government

12%

Comms Service Provider

Manufacturing Company

Computer Software Company

12%

Financial Services Firm

Manufacturing Company

Comms Service Provider

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

By reviewers
Company Size	Count
Small Business	10
Midsize Enterprise	2
Large Enterprise	11

By reviewers
Company Size	Count
Small Business	3
Large Enterprise	11

By reviewers
Company Size	Count
Small Business	25
Midsize Enterprise	12
Large Enterprise	31

Questions from the Community

What needs improvement with Cloudflare Access?

Cloudflare Access has strong integration with Microsoft, among other platforms. However, when it comes to Kaspersky, ...

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What is your primary use case for Cloudflare Access?

Cloudflare Access provides secure access to internal applications for employees, external members of the organization...

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What advice do you have for others considering Cloudflare Access?

Cloudflare Access is one of the best integrations available. While about two hundred vendors offer similar services, ...

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What is Kiteworks?

Kiteworks is a secured file sharing platform that enables users to collaborate with different parties across a robust...

See all answers

What needs improvement with Kiteworks?

I'm not a network expert, however, there must be some room for improvement. Perhaps there could be a notification to ...

See all answers

What advice do you have for others considering Kiteworks?

Scalability is impressive. It can be highly available, resilient, and scalable infrastructure. I can confidently give...

See all answers

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...

See all answers

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 ...

See all answers

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.

See all answers

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Product Reports

Buyer's Guide

Cloudflare One

May 2026

Download Cloudflare One product report

Buyer's Guide

Kiteworks

April 2026

Download Kiteworks product report

Buyer's Guide

Microsoft Defender for Office 365

April 2026

Microsoft Defender for Office 365 report

Download Microsoft Defender for Office 365 product report

Also Known As

Cloudflare Area 1 Email Security, Cloudflare Bot Management, Cloudflare Gateway, Cloudflare Zero Trust Platform, Cloudflare DDoS, Cloudflare SASE & SSE Platform

Accellion

MS Defender for Office 365

Overview

Cloudflare One is a comprehensive platform for security, performance, and connectivity. It provides features like rate limiting, DDoS protection, and application access, tailored to enhance user experience while securing internet access and accelerating communications.

Designed to integrate security measures with ease of use and scalability, Cloudflare One offers a secure web gateway and zero trust network access. These features ensure seamless setup and operation, making connectivity reliable and protected. Users appreciate its integrated console, intuitive interface, and the ability to manage risk effectively. It offers straightforward deployment, improves latency, and boasts cost-effectiveness. While its onboarding process and documentation need enhancement, its value in content delivery and application shielding is notable. Despite challenges in integrating Cloudflare Access with existing VPNs and the need for better automation and support, it remains vital for DNS and infrastructure protection.

What features make Cloudflare One stand out?

Rate Limiting: Controls the traffic rate to prevent abuse.
DDoS Protection: Shields applications from distributed denial-of-service attacks.
Secure Web Gateway: Provides secure internet access with seamless operation.
Zero Trust Network Access: Ensures secure, application-based connectivity without relying on traditional VPNs.
Access for Connectivity: Facilitates access to internal applications securely.

What benefits should users look for in reviews?

Security: Robust measures for DNS and browsing protection.
Performance: Enhanced site accessibility and communication speed.
Cost-Effectiveness: Offers competitive pricing for its features.
Ease of Deployment: Straightforward and efficient setup process.

In industries like finance, retail, and technology, Cloudflare One is crucial for enabling secure remote access and protecting web applications against dynamic threats. It supports compliance access policies and enhances content delivery, playing a key role in safeguarding digital infrastructure.

Cloudflare

Kiteworks provides secure enterprise file sharing with mobile access and collaboration tools, supporting up to 100 GB transfers. It ensures data safety with encryption and offers a smooth interface for independent data management.

Kiteworks is tailored for effective large-scale data transfers using SFTP, email, and web. It supports two-factor authentication, antivirus scanning, and seamless integration with SSO to minimize administrative tasks. Users benefit from a centralized platform that offers visibility and control over data exchanges, receiving activity notifications and managing encryption keys independently. Despite its strengths, technical support and interface stability need improvement, along with the introduction of automated LDAP syncing and expanded knowledge resources.

What features make Kiteworks stand out?

Mobile Access: Facilitates secure data handling on-the-go.
Enterprise File Sharing: Enables large file transfers with up to 100 GB limit.
Collaboration Tools: Streamlines team efforts and file sharing.
Enhanced Security: Includes two-factor authentication and antivirus scanning.
SSO Integration: Reduces administrative tasks for efficient user management.

What ROI benefits should users seek in reviews?

Data Security: High level of encryption ensures sensitive data protection.
Efficient Management: Independent data handling and activity alerts improve workflow.
Administrative Ease: SSO and centralized logs simplify oversight and reduce complexity.

Organizations in sectors like healthcare and finance utilize Kiteworks to securely share and transfer sensitive data, from medical records to credit card information, ensuring compliance and data integrity. Industries benefit from its automated data transfer and secure communication capabilities, critical for operations ranging from air quality monitoring to banking transactions.

Kiteworks

Microsoft Defender for Office 365 offers real-time email security, enhancing threat detection through integration within the Microsoft ecosystem. Its user-friendly interface and central management streamline operations, providing robust protection against phishing, ransomware, and malware.

Defender for Office 365 is focused on efficiently securing email communication by safeguarding against phishing, malware, and spam threats. With its strong integration with other Microsoft services, it is tailored to improve endpoint security and identity protection. Its centralized management tools simplify threat prioritization, while the automated threat response capabilities ensure swift actions against potential risks. Organizations leverage its capabilities to efficiently manage their cybersecurity efforts, particularly in remote work environments, while maintaining a secure system across Office 365 applications and Azure-hosted services.

What are the key features?

Real-time Email Protection: Continuously monitors and protects email communications.
Safe Attachments and Links: Scans attachments and links for potential threats.
Anti-Phishing Measures: Provides tools to detect and block phishing attempts.
Integration with Microsoft Services: Seamlessly connects with other Microsoft applications for enhanced security.
Automated Threat Responses: Activates immediate responses to detected threats.

What benefits should users expect from reviews?

Time Savings: Automates processes to reduce manual threat management efforts.
Improved Cybersecurity: Strengthens organizational defenses against various cyber threats.
Efficient Remote Work: Enhances protection for remote teams and virtual collaborations.
Comprehensive Coverage: Extends protection across Office 365 and Azure services.

Implementations of Defender for Office 365 vary across industries, optimizing email security for sectors such as finance, healthcare, and education. In finance, it aids in protecting sensitive financial data from phishing and fraud. Healthcare benefits from secure communications, ensuring patient data privacy. Educational institutions use it to maintain secure virtual learning environments against cyber threats.

Microsoft

Sample Customers

23andMe

United States Securities and Exchange Commission, National Health Service, Husch Blackwell LLP, NYC Health + Hospitals, Viatris, MITRE Corporation, Chubb, Kraft Heinz, KPMG, Kohler, National Institute of Standards and Technology, Purdue Pharma, AVL

Microsoft Defender for Office 365 is trusted by companies such as Ithaca College.

Buyer's Guide

Kiteworks vs. Microsoft Defender for Office 365

April 2026

Free Report: Kiteworks vs. Microsoft Defender for Office 365

Find out what your peers are saying about Kiteworks vs. Microsoft Defender for Office 365 and other solutions. Updated: April 2026.

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