List of Companies Using Microsoft Defender
Prospecting companies using Microsoft Defender? Here they are, biggest first, including F12.net, Fisher Investments UK and Gerber Scientific Inc.. Open a company to see its revenue range, headcount, tech stack and the people to contact.
Company NameIndustryLocationFundingRevenueEmployees
$27M
$50M - $100M
278
$25M - $50M
278
$50M - $100M
278
$50M - $100M
278
$26M
$10M - $25M
278
$250M - $500M
277
$10M - $25M
277
$250M - $500M
277
$25M - $50M
277
$10M - $25M
277
$1M - $10M
276
$700M
$50M - $100M
276
$1M - $10M
276
$50M - $100M
276
$25M - $50M
276
$13M
$100M - $250M
276
$255M
$100M - $250M
275
$250M - $500M
275
$100M - $250M
274
$100M - $250M
274
$1M - $10M
274
$1B - $10B
274
$65M
$50M - $100M
274
$10M - $25M
273
$100M - $250M
273
$100M - $250M
273
$50M - $100M
273
$50M - $100M
272
$10M - $25M
272
$50M - $100M
272
$100M - $250M
272
$48M
$100M - $250M
272
$1M - $10M
272
$1.2B
$50M - $100M
272
$100M - $250M
272
$1M - $10M
272
$500M - $1B
272
$25M - $50M
272
$25M - $50M
271
$50M - $100M
271
$10M - $25M
271
$10M - $25M
271
$50M - $100M
271
$214K
$1M - $10M
270
$50M - $100M
270
$50M - $100M
269
$1.8B
$500M - $1B
269
$100M - $250M
269
$10M
$10M - $25M
269
$1B - $10B
269
$27M
$100M - $250M
269
$10M - $25M
269
$50M - $100M
269
$100M - $250M
269
$100M - $250M
269
$1M - $10M
269
$1M - $10M
268
$100M - $250M
268
$100M - $250M
268
$50M - $100M
268
$190M
$250M - $500M
268
$100M - $250M
268
$1M - $10M
268
$50M - $100M
267
$10M - $25M
267
$1M - $10M
266
$100M - $250M
266
$10M - $25M
266
$500M - $1B
266
$50M - $100M
266
$100M - $250M
266
$100M - $250M
266
$100M - $250M
265
$250M - $500M
265
$25M - $50M
265
$10M - $25M
265
$500M - $1B
265
$1B - $10B
265
$169K
$50M - $100M
265
$100M - $250M
265
$25M - $50M
265
$100M - $250M
265
<$1M
264
$25M - $50M
264
$50M - $100M
264
$100M - $250M
264
$250M - $500M
264
$100M - $250M
264
$25M - $50M
264
$26M
$50M - $100M
264
$594M
$100M - $250M
264
$25M - $50M
264
$100M - $250M
264
$10M - $25M
263
$50M - $100M
263
$100M - $250M
263
$1.1M
$10M - $25M
263
$250M - $500M
263
$250M - $500M
262
$25M - $50M
262
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 F12.net, Fisher Investments UK and Gerber Scientific 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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