List of Companies Using Microsoft Defender
Prospecting companies using Microsoft Defender? Here they are, biggest first, including DataVox, Livent, now Rio Tinto and NuvemRx. Open a company to see its revenue range, headcount, tech stack and the people to contact.
Company NameIndustryLocationFundingRevenueEmployees
$250M - $500M
304
$100M - $250M
304
$500M - $1B
304
$25M - $50M
304
$500M - $1B
304
$25M - $50M
303
$1.2B
$500M - $1B
303
$50M - $100M
303
$25M - $50M
303
$100M - $250M
303
$10M - $25M
303
$250M - $500M
303
$1M - $10M
303
$1M - $10M
303
$250M - $500M
303
$1B - $10B
303
$25M - $50M
303
$500M - $1B
302
$76M
$250M - $500M
302
$25M - $50M
302
$10M - $25M
302
$50M - $100M
302
$25M - $50M
302
$1B - $10B
302
$10M - $25M
302
$500M - $1B
301
$100M - $250M
301
$10M - $25M
301
$50M - $100M
301
$100M - $250M
301
$100M - $250M
301
$100M - $250M
301
$130M
$500M - $1B
301
$54M
$100M - $250M
300
$100M - $250M
300
$100M - $250M
300
$25M - $50M
299
$50M - $100M
299
$100M - $250M
299
$100M
$1B - $10B
299
$10M - $25M
298
$100M - $250M
298
$250M - $500M
298
$100M - $250M
298
$50M - $100M
298
$25M - $50M
297
$100M - $250M
297
$100M - $250M
297
$100M - $250M
297
$500M - $1B
297
$1M - $10M
297
$100M - $250M
296
$25M - $50M
296
$50M - $100M
296
$10M - $25M
296
$1B - $10B
296
$550K
$100M - $250M
295
$100M
$100M - $250M
295
$250M - $500M
295
$500M - $1B
295
$50M - $100M
295
$10M - $25M
295
$500M - $1B
295
$50M - $100M
294
$10M - $25M
294
$37M
$250M - $500M
294
$250M - $500M
294
$100M - $250M
294
$1M - $10M
294
$1M - $10M
294
$500M - $1B
293
$1M - $10M
293
$50M - $100M
293
$10M - $25M
293
$50M - $100M
293
$100M - $250M
293
$100M - $250M
292
$500M - $1B
292
$50M - $100M
292
$29M
$50M - $100M
292
$100M - $250M
292
$50M - $100M
292
$100M - $250M
292
$10M - $25M
292
$10M - $25M
291
$50M - $100M
291
$550M
$100M - $250M
291
$100M - $250M
291
$25M - $50M
291
$250M - $500M
290
$100M - $250M
290
$250M - $500M
290
$25M - $50M
290
$1B - $10B
290
$250M - $500M
290
$500M - $1B
290
$50M - $100M
290
$1M - $10M
290
$100M - $250M
290
$1M - $10M
289
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 DataVox, Livent, now Rio Tinto and NuvemRx.
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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