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 (431 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
            5.94%
            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
                60.63%, FortiGate Cloud with
                10.45%, Fortinet FortiAnalyzer with
                5.56% market share.

Question 4

What are the top countries that use Microsoft 365 Defender?

Accepted Answer

Around the world in 2025, over
          2,162 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
          853 customers.
          51.35% of Microsoft 365 Defender
          customers are from the United States. Other top countries
          using Microsoft 365 Defender are
          United Kingdom and Canada with 211(12.70%) and 147(8.85%) 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 (117), Cybersecurity (93), Cloud Services (92).

Technology	Domains	Market Share (Est.)	Versus page
Proofpoint Insider Threat Management	22075	60.63%	Microsoft 365 Defender vs Proofpoint Insider Threat Management
FortiGate Cloud	3805	10.45%	Microsoft 365 Defender vs FortiGate Cloud
Fortinet FortiAnalyzer	2026	5.56%	Microsoft 365 Defender vs Fortinet FortiAnalyzer
Kerio	1452	3.99%	Microsoft 365 Defender vs Kerio
IBM QRadar SIEM	1234	3.39%	Microsoft 365 Defender vs IBM QRadar SIEM
Sophos Unified Threat Management	923	2.53%	Microsoft 365 Defender vs Sophos Unified Threat Management
InsightVM	592	1.63%	Microsoft 365 Defender vs InsightVM
IBM Security MaaS360	541	1.49%	Microsoft 365 Defender vs IBM Security MaaS360
Vyatta	458	1.26%	Microsoft 365 Defender vs Vyatta
Symantec Advanced Threat Protection	255	0.70%	Microsoft 365 Defender vs Symantec Advanced Threat Protection
Cisco TrustSec	165	0.45%	Microsoft 365 Defender vs Cisco TrustSec
Cisco Tetration	153	0.42%	Microsoft 365 Defender vs Cisco Tetration
AlienVault Unified Security Management	139	0.38%	Microsoft 365 Defender vs AlienVault Unified Security Management
Cisco Threat Grid	97	0.27%	Microsoft 365 Defender vs Cisco Threat Grid
Damballa	66	0.18%	Microsoft 365 Defender vs Damballa
WatchGuard Unified Threat Management	61	0.17%	Microsoft 365 Defender vs WatchGuard Unified Threat Management
Cyware	53	0.15%	Microsoft 365 Defender vs Cyware
ThreatQuotient	42	0.12%	Microsoft 365 Defender vs ThreatQuotient
NopSec Unified VRM	36	0.10%	Microsoft 365 Defender vs NopSec Unified VRM
Silobreaker	18	0.05%	Microsoft 365 Defender vs Silobreaker

Customers	Employee Range	City	Region	Country
AkzoNobel	10,000+	Amsterdam	North Holland	Netherlands
Sonepar	10,000+	Paris	Ile-de-France	France
Halma Plc	5,000 - 9,999	Amersham	England	United Kingdom
Elpedison	250 - 499	Marousi	Attica	Greece
Van Doorne	250 - 499	Amsterdam	North Holland	Netherlands
OpalSoft	100 - 249	Sunnyvale	California	United States
SecWise	20 - 49	Kontich	Flanders	Belgium
Wounded Warrior Project	500 - 999	Jacksonville	Florida	United States
Nomios	500 - 999	Leiden	South Holland	Netherlands
AML RightSource	5,000 - 9,999	Cleveland	Ohio	United States

Microsoft 365 Defender

Market Share of Microsoft 365 Defender

2162

5.94%

#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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