List of Companies Using Microsoft Defender
Prospecting companies using Microsoft Defender? Here they are, biggest first, including Liebherr Container Cranes Ltd., Marymount Hospital and Newrez Servicing. Open a company to see its revenue range, headcount, tech stack and the people to contact.
Company NameIndustryLocationFundingRevenueEmployees
$1M - $10M
326
$50M - $100M
326
$250M - $500M
326
$50M - $100M
326
$10M - $25M
326
$25M - $50M
325
$50M - $100M
325
$250M - $500M
325
$130M
$500M - $1B
325
$1B - $10B
324
$100M - $250M
324
$250M - $500M
324
$500M - $1B
324
$191M
$250M - $500M
324
$183M
$500M - $1B
324
$100M - $250M
323
$9.6M
$10M - $25M
323
$100M - $250M
323
$532M
$100M - $250M
323
$25M - $50M
323
$10M - $25M
323
$50M - $100M
323
$100M - $250M
323
$100M - $250M
322
$26M
$100M - $250M
322
$100M - $250M
322
$100M - $250M
322
$25M - $50M
322
$25M - $50M
322
$100M - $250M
322
$50M - $100M
321
$264M
$10M - $25M
321
$1.9B
$100M - $250M
321
$400M
$500M - $1B
321
$25M - $50M
321
$10M - $25M
320
$250M - $500M
320
$25M - $50M
320
$250M - $500M
320
$50M - $100M
320
<$1M
320
$100M - $250M
320
$10M - $25M
320
$100M - $250M
319
$100M - $250M
319
$1B - $10B
318
$174M
$1M - $10M
318
$100M - $250M
318
$1B - $10B
318
$10M - $25M
318
$100M - $250M
318
$500M - $1B
317
$100M - $250M
317
<$1M
317
$18M
$100M - $250M
317
$168M
$1B - $10B
317
$25M - $50M
317
$50M - $100M
316
$52M
$25M - $50M
316
$10M - $25M
316
$50M - $100M
316
$100M - $250M
315
$100M - $250M
315
$25M - $50M
315
$100M - $250M
314
$500M - $1B
314
$50M - $100M
314
$10M - $25M
314
$1M - $10M
314
$50M - $100M
314
$1.8B
$50M - $100M
314
$10M - $25M
313
$500M - $1B
312
$50M - $100M
312
$10M - $25M
312
$182M
$25M - $50M
312
$100M - $250M
312
$250M - $500M
312
$50M - $100M
312
$100M - $250M
312
$25M - $50M
312
$55M
$250M - $500M
312
$250M - $500M
311
$1.4M
$25M - $50M
311
$1M - $10M
311
$10M - $25M
311
$100M - $250M
311
$50M - $100M
311
<$1M
311
$1M - $10M
311
$1M - $10M
311
$250M - $500M
310
$1M - $10M
310
$4.5M
$25M - $50M
310
$10M - $25M
310
$50M - $100M
310
$100M - $250M
310
$146M
$250M - $500M
310
$50M - $100M
309
$100M - $250M
309
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 Liebherr Container Cranes Ltd., Marymount Hospital and Newrez Servicing.
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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