Question 1

Who are the top Microsoft 365 Defender competitors?

Accepted Answer

Microsoft 365 Defender’s Top competitors in the unified-threat-management category are Proofpoint Insider Threat Management, FortiGate Cloud, Fortinet FortiAnalyzer. You can view a full list of Microsoft 365 Defender competitors here. 6sense uses advanced data mining and AI algorithms to track customers and competitors of Microsoft 365 Defender and 40,000 other technologies on the internet. You can also compare Microsoft 365 Defender and its feature with top competitors here : Microsoft 365 Defender vs Proofpoint Insider Threat Management Microsoft 365 Defender vs FortiGate Cloud Microsoft 365 Defender vs Fortinet FortiAnalyzer.

Question 2

What is Microsoft 365 Defender customer distribution based on
            company size?

Accepted Answer

The majority of Microsoft 365 Defender’s customers for the unified-threat-management category fall in the company size of 1,000 - 4,999 employees (450 companies). You can view a distribution chart of Microsoft 365 Defender customers by company size here.

Question 3

What is Microsoft 365 Defender market share in the
            unified-threat-management?

Accepted Answer

Microsoft 365 Defender has market share of
            6.07%
            in unified-threat-management market.
            Microsoft 365 Defender competes
            with 27 competitor tools in
            unified-threat-management category. The top alternatives for
            Microsoft 365 Defender unified-threat-management tool are
            Proofpoint Insider Threat Management with
                60.73%, FortiGate Cloud with
                10.32%, Fortinet FortiAnalyzer with
                5.48% market share.

Question 4

What are the top countries that use Microsoft 365 Defender?

Accepted Answer

Around the world in 2025, over
          2,203 companies
          have started using Microsoft 365 Defender as
          unified-threat-management tool. Companies using
          Microsoft 365 Defender for unified-threat-management are majorly
          from United States with
          871 customers.
          51.57% of Microsoft 365 Defender
          customers are from the United States. Other top countries
          using Microsoft 365 Defender are
          United Kingdom and Canada with 222(13.14%) and 151(8.94%) customers respectively.

Question 5

What are the top industries that use Microsoft 365 Defender?

Accepted Answer

Top industries that use Microsoft 365 Defender for
            unified-threat-management are Managed Services (123), Cloud Services (93), Cybersecurity (93).

Technology	Domains	Market Share (Est.)	Versus page
Proofpoint Insider Threat Management	22055	60.73%	Microsoft 365 Defender vs Proofpoint Insider Threat Management
FortiGate Cloud	3748	10.32%	Microsoft 365 Defender vs FortiGate Cloud
Fortinet FortiAnalyzer	1989	5.48%	Microsoft 365 Defender vs Fortinet FortiAnalyzer
Kerio	1424	3.92%	Microsoft 365 Defender vs Kerio
IBM QRadar SIEM	1240	3.41%	Microsoft 365 Defender vs IBM QRadar SIEM
Sophos Unified Threat Management	908	2.50%	Microsoft 365 Defender vs Sophos Unified Threat Management
InsightVM	622	1.71%	Microsoft 365 Defender vs InsightVM
IBM Security MaaS360	534	1.47%	Microsoft 365 Defender vs IBM Security MaaS360
Vyatta	452	1.24%	Microsoft 365 Defender vs Vyatta
Symantec Advanced Threat Protection	250	0.69%	Microsoft 365 Defender vs Symantec Advanced Threat Protection
Cisco TrustSec	170	0.47%	Microsoft 365 Defender vs Cisco TrustSec
Cisco Tetration	149	0.41%	Microsoft 365 Defender vs Cisco Tetration
AlienVault Unified Security Management	136	0.37%	Microsoft 365 Defender vs AlienVault Unified Security Management
Cisco Threat Grid	93	0.26%	Microsoft 365 Defender vs Cisco Threat Grid
Damballa	64	0.18%	Microsoft 365 Defender vs Damballa
WatchGuard Unified Threat Management	59	0.16%	Microsoft 365 Defender vs WatchGuard Unified Threat Management
Cyware	52	0.14%	Microsoft 365 Defender vs Cyware
ThreatQuotient	45	0.12%	Microsoft 365 Defender vs ThreatQuotient
NopSec Unified VRM	33	0.09%	Microsoft 365 Defender vs NopSec Unified VRM
Silobreaker	20	0.06%	Microsoft 365 Defender vs Silobreaker

Customers	Employee Range	City	Region	Country
Tesco, Inc. Of South Carolina	10,000+	Welwyn Garden City	England	United Kingdom
Dow	10,000+	Midland	Michigan	United States
Eletrobras	10,000+	Rio de Janeiro	Rio de Janeiro	Brazil
Victorian Department Of Health	10,000+	Melbourne	Victoria	Australia
Sanitas	10,000+	Madrid	Madrid	Spain
Transport For NSW	10,000+	Sydney	New South Wales	Australia
Harris County	10,000+	Houston	Texas	United States
MTN	10,000+	Johannesburg	Gauteng	South Africa
NewYork - Presbyterian Hospital	10,000+	New York City	New York	United States
Allstate Corporation	10,000+	Northbrook	Illinois	United States

Microsoft 365 Defender

Market Share of Microsoft 365 Defender

2203

6.07%

#3

Top Competitors and Alternatives of Microsoft 365 Defender

Top Competitors and Alternatives of Microsoft 365 Defender

Customers of Microsoft 365 Defender

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Microsoft 365 Defender Customers by Products and Services

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Microsoft 365 Defender Customers by Employee Size

Microsoft 365 Defender Customers by Geography

Employees of Microsoft 365 Defender

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