List of Companies Using Microsoft Defender
Prospecting companies using Microsoft Defender? Here they are, biggest first, including US Signal, Axpo Iberia and Beyond Blue. Open a company to see its revenue range, headcount, tech stack and the people to contact.
Company NameIndustryLocationFundingRevenueEmployees
$100M - $250M
349
$25M - $50M
348
$3.3M
$1M - $10M
348
$57M
$10M - $25M
348
$100M - $250M
348
$100M - $250M
347
$10M - $25M
347
$37M
$25M - $50M
347
$100M - $250M
347
$1B - $10B
346
$25M - $50M
346
$250M - $500M
346
$1M - $10M
346
$100M - $250M
346
$10M - $25M
346
$12M
$100M - $250M
346
$250M - $500M
346
$65M
$50M - $100M
345
$100M - $250M
345
$250M - $500M
345
$25M - $50M
345
$100M - $250M
345
$25M - $50M
345
$25M - $50M
344
$50M - $100M
344
$10M - $25M
344
$250M - $500M
344
$25M - $50M
344
$50M - $100M
344
$25M - $50M
344
$296M
$500M - $1B
343
$500M - $1B
343
$250M - $500M
343
$25M - $50M
343
$250M - $500M
342
$1M - $10M
341
$250M - $500M
341
$100M - $250M
341
$1B - $10B
341
$100M - $250M
340
$50M - $100M
340
$100M - $250M
339
$25M - $50M
339
$25M - $50M
339
$100M - $250M
339
$100M - $250M
339
$100M - $250M
338
$100M - $250M
338
$250M - $500M
338
$25M - $50M
338
$1B - $10B
338
$50M - $100M
337
$490M
$10M - $25M
337
$25M - $50M
337
$10M - $25M
337
$55M
$250M - $500M
337
$25M - $50M
337
$25M - $50M
336
$100M - $250M
336
$100M - $250M
335
$10M - $25M
335
$52M
$50M - $100M
335
$50M - $100M
334
$100M - $250M
334
$250M - $500M
334
$250M - $500M
334
$100M - $250M
334
$1.5M
$25M - $50M
334
$25M - $50M
333
$250M - $500M
333
$50M - $100M
333
$25M - $50M
333
$250M - $500M
333
$25M - $50M
333
$100M - $250M
333
$4M
$50M - $100M
333
$10M - $25M
333
$1B - $10B
333
$1.8B
$250M - $500M
333
$50M - $100M
332
$68M
$100M - $250M
332
$500M - $1B
331
$100M - $250M
331
$25M - $50M
331
$10M - $25M
331
$1M - $10M
331
$25M
$10M - $25M
331
$500M - $1B
330
$100M - $250M
330
$1B - $10B
330
$498M
$50M - $100M
330
$25M - $50M
329
$25M - $50M
329
$10M - $25M
328
$50M - $100M
328
$50M - $100M
328
$100M - $250M
328
$250M - $500M
327
$800K
$100M - $250M
327
$25M - $50M
326
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 US Signal, Axpo Iberia and Beyond Blue.
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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