List of Companies Using Microsoft Defender
Prospecting companies using Microsoft Defender? Here they are, biggest first, including Washington Secretary of State, Alexander & Baldwin and Barbaricum. Open a company to see its revenue range, headcount, tech stack and the people to contact.
Company NameIndustryLocationFundingRevenueEmployees
$25M - $50M
165
$910M
$250M - $500M
164
$50M - $100M
164
$4.2M
$100M - $250M
164
$100M - $250M
164
$500M - $1B
164
$10M - $25M
164
$50M - $100M
164
$50M - $100M
164
$50M - $100M
164
$1M - $10M
164
$1M - $10M
163
$250M - $500M
163
$75K
$50M - $100M
163
$500M - $1B
163
$100M - $250M
163
$50M - $100M
163
$100M - $250M
163
$10M
$100M - $250M
162
$50M - $100M
162
$100M - $250M
162
$26M
$50M - $100M
162
$50M - $100M
162
$25M - $50M
162
$50M - $100M
161
$10M - $25M
161
$1M - $10M
161
$1M - $10M
161
$100M - $250M
161
$50M - $100M
161
<$1M
161
$100M - $250M
161
$1M - $10M
161
$50M - $100M
160
$25M - $50M
160
$5.6M
$1M - $10M
160
$2.3M
$100M - $250M
160
$25M - $50M
160
$25M - $50M
160
$1.2M
$50M - $100M
160
$50M - $100M
160
$10M - $25M
160
$1M - $10M
160
$250M - $500M
160
$100M - $250M
159
$50M - $100M
159
$10M - $25M
159
$250M - $500M
159
$20K
$100M - $250M
159
$100M - $250M
159
$100M - $250M
159
$25M
$100M - $250M
159
$1M - $10M
159
$250M - $500M
158
$50M
$50M - $100M
158
$50M - $100M
158
$10M - $25M
158
$10M - $25M
158
$100M - $250M
158
$10M - $25M
158
$173M
$100M - $250M
158
$10M - $25M
158
$500M - $1B
158
$50M - $100M
158
$100M - $250M
158
$50M - $100M
157
$1B - $10B
157
$1M - $10M
157
$10M - $25M
157
$1M - $10M
157
$50M - $100M
157
$100M - $250M
157
$111M
$25M - $50M
157
$250M - $500M
157
$100M - $250M
157
$1M - $10M
157
$1M - $10M
157
$100M - $250M
157
$50M - $100M
157
$10M - $25M
157
$10M - $25M
157
$500M - $1B
157
$25M - $50M
156
$50M - $100M
156
$100M - $250M
156
$10B+
156
$100M - $250M
156
$24M
$1M - $10M
156
$124M
$10M - $25M
156
$25M - $50M
155
$25M - $50M
155
$50M - $100M
155
$100M - $250M
155
$100M - $250M
155
$25M - $50M
155
$100M - $250M
155
<$1M
155
$250M - $500M
155
$1M - $10M
155
$100M - $250M
155
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 Washington Secretary of State, Alexander & Baldwin and Barbaricum.
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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