List of Companies Using Microsoft Defender
Prospecting companies using Microsoft Defender? Here they are, biggest first, including TechStar Group, Cumberland University and Junglee Games. Open a company to see its revenue range, headcount, tech stack and the people to contact.
Company NameIndustryLocationFundingRevenueEmployees
$50M - $100M
604
$25M - $50M
602
$3.5M
$100M - $250M
602
$10M - $25M
602
$100M - $250M
601
$100M - $250M
601
$10M - $25M
600
$10M - $25M
600
$10M - $25M
600
$2.4M
$500M - $1B
599
$1B - $10B
599
$100M - $250M
599
$100M - $250M
598
$50M - $100M
598
$50M - $100M
598
$250M - $500M
598
$250M - $500M
597
$79M
$25M - $50M
597
$10M
$100M - $250M
596
$1M - $10M
596
$1B
$500M - $1B
596
$250M - $500M
596
$500M - $1B
595
$665M
$100M - $250M
594
$500M - $1B
594
$250M - $500M
593
$10M - $25M
593
$1M - $10M
592
$100M - $250M
591
$100M - $250M
591
$1M - $10M
591
$50M - $100M
591
$100M - $250M
590
$3.6B
$250M - $500M
590
$500M - $1B
589
$250M - $500M
588
$250M - $500M
588
$500M - $1B
587
$100M - $250M
587
$250M - $500M
587
$25M - $50M
587
$250M - $500M
586
$250M - $500M
586
$50M - $100M
586
$50M - $100M
586
$22M
$1M - $10M
585
$10M - $25M
585
$1M - $10M
585
$250M - $500M
585
$100M - $250M
585
$250M - $500M
584
$100M - $250M
584
$100M - $250M
584
$100M - $250M
583
$100M - $250M
583
$80M
$100M - $250M
583
$414M
$50M - $100M
583
$100M - $250M
581
$100M - $250M
580
$1.1B
$500M - $1B
580
$1B - $10B
579
$179M
$1B - $10B
579
$500M - $1B
579
$180M
$250M - $500M
579
$500M - $1B
578
$50M - $100M
577
$1M - $10M
576
$1M - $10M
576
$250M - $500M
576
$1M - $10M
576
$50M - $100M
576
$25M - $50M
575
$250M - $500M
575
$1B - $10B
575
$50M - $100M
574
$50M - $100M
574
$1M - $10M
574
$50M - $100M
572
$1M - $10M
572
$60M
$500M - $1B
571
$100M - $250M
571
$10M - $25M
570
$25M - $50M
570
$25M - $50M
570
$25M - $50M
569
$250M - $500M
569
$100M - $250M
569
$315M
$500M - $1B
568
$789M
$10B+
567
$250M - $500M
567
$35M
$100M - $250M
567
$50M - $100M
567
$500M - $1B
567
$500M - $1B
566
$1B - $10B
565
$216M
$250M - $500M
564
$1B - $10B
564
$1B - $10B
564
$216M
$250M - $500M
563
$250M - $500M
563
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 TechStar Group, Cumberland University and Junglee Games.
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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