List of Companies Using Microsoft Defender
Prospecting companies using Microsoft Defender? Here they are, biggest first, including Micro Strategies Inc., Service Victoria and Synersys Technologies inc. Open a company to see its revenue range, headcount, tech stack and the people to contact.
Company NameIndustryLocationFundingRevenueEmployees
$100M - $250M
145
$1M - $10M
145
$50M - $100M
145
$50M - $100M
145
$50M - $100M
144
$250M - $500M
144
$25M - $50M
144
$14M
$1M - $10M
144
$1M - $10M
144
$100M - $250M
144
$49M
$10M - $25M
144
$100M - $250M
144
$25M - $50M
144
$250M - $500M
143
$100M - $250M
143
$1M - $10M
143
$25M - $50M
143
$500M - $1B
143
$82M
$1M - $10M
143
$12M
$100M - $250M
143
$55M
$25M - $50M
143
$10M - $25M
143
$1M - $10M
143
$100M - $250M
142
$1M - $10M
142
$100M - $250M
142
$1M - $10M
142
$360M
$50M - $100M
142
$154M
$25M - $50M
142
$25M - $50M
142
$100M - $250M
142
$2.3B
$100M - $250M
142
$1M - $10M
142
$10M - $25M
142
$100M - $250M
142
$100M - $250M
141
$1M - $10M
141
$25M - $50M
141
$100M - $250M
141
$20M
$100M - $250M
141
$50M - $100M
141
$1M
$25M - $50M
141
$100M - $250M
141
$10M - $25M
141
$35M
$50M - $100M
141
$10M - $25M
141
$1M - $10M
141
$50M - $100M
141
$1M - $10M
140
$129M
$100M - $250M
140
$100M - $250M
140
$100M - $250M
140
$100M - $250M
140
$1M - $10M
140
$50M - $100M
140
$10M - $25M
140
$25M - $50M
140
$1B - $10B
140
$25M - $50M
140
$243M
$50M - $100M
140
$10M - $25M
139
$25M - $50M
139
$100M - $250M
139
$100M - $250M
139
$100M - $250M
139
$300M
$50M - $100M
139
$1M - $10M
139
$100M - $250M
139
$10M - $25M
139
$250M - $500M
139
$25M - $50M
139
<$1M
138
$100M - $250M
138
$23M
$250M - $500M
138
$100M - $250M
138
$50M - $100M
138
$50M - $100M
138
$50M - $100M
138
$84M
$10M - $25M
138
$10M - $25M
138
$50M - $100M
138
$82M
$50M - $100M
138
$11M
$1B - $10B
137
$2B
$100M - $250M
137
$50M - $100M
137
$100M - $250M
137
$50M - $100M
137
$322M
$100M - $250M
137
$100M - $250M
137
$5M
$25M - $50M
137
$131M
$50M - $100M
137
$10M - $25M
137
$1B - $10B
137
$100M - $250M
137
$13M
$1M - $10M
137
$50M - $100M
137
$10M - $25M
137
$100M - $250M
137
$1M - $10M
137
$10M - $25M
137
About companies using Microsoft Defender
Why target companies using Microsoft Defender?
Microsoft Defender is a Security, identity & compliance technology. Companies running these tools already spend on identity, endpoint, email and consent security, which makes them mature buyers in the category. Companies on the list include Micro Strategies Inc., Service Victoria and Synersys Technologies inc.
Which industries use Microsoft Defender the most?
Among companies using Microsoft Defender on LeadIQ, the most common industries are IT Services and IT Consulting, Software Development, Financial Services, Insurance, Higher Education and Hospitals and Health Care. Narrow your list to the industry you sell into from there.
Where are companies using Microsoft Defender located?
Companies using Microsoft Defender are most often headquartered in the United States, the United Kingdom, Canada, Germany, Australia and France.
What other Security, identity & compliance technologies do companies use?
Prospecting the wider Security, identity & compliance space? Related technologies with their own company lists include Microsoft Active Directory, Cisco, Microsoft Entra ID and CookieYes.
How do I reach decision makers at companies using Microsoft Defender?
Open a company to see its employee directory and email format, then use LeadIQ to get verified work emails and phone numbers for the people you want to reach and push them straight to your CRM or sequencer.
Insights based on LeadIQ data refreshed in September 2026.
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