List of Companies Using Microsoft Defender
Prospecting companies using Microsoft Defender? Here they are, biggest first, including WSP Danmark, Westdale Asset Management and Marmon Holdings, Inc.. Open a company to see its revenue range, headcount, tech stack and the people to contact.
Company NameIndustryLocationFundingRevenueEmployees
$250M - $500M
645
$500M - $1B
645
$250M - $500M
643
$25M - $50M
642
$1M - $10M
642
$100M - $250M
642
$250M - $500M
641
$50M - $100M
641
$150K
$500M - $1B
641
$500M - $1B
640
$1M - $10M
640
$100M - $250M
639
$25M - $50M
639
$1B - $10B
639
$10M
$500M - $1B
639
$500M - $1B
638
$25M - $50M
638
$300M
$10B+
638
$250M - $500M
638
$1.7B
$1B - $10B
637
$1B - $10B
637
$250M - $500M
637
$1B - $10B
637
$10M - $25M
637
$50M - $100M
636
$10M - $25M
635
$500M - $1B
634
$50M
$500M - $1B
634
$250M - $500M
632
$1M - $10M
632
$50M - $100M
632
$100M - $250M
632
$25M
$250M - $500M
632
$10M - $25M
631
$250M - $500M
631
$85M
$100M - $250M
631
$53M
$50M - $100M
631
$25M - $50M
631
$25M - $50M
630
$100M - $250M
630
$250M - $500M
629
$100M - $250M
629
$100M
$100M - $250M
628
$320M
$100M - $250M
628
$250M - $500M
627
$1M - $10M
627
$500M
$500M - $1B
627
$250M - $500M
627
$100M - $250M
626
$100M - $250M
625
$100M - $250M
625
$100M - $250M
623
$9.7M
$50M - $100M
622
$25M - $50M
622
$353M
$250M - $500M
621
$1B - $10B
620
$163M
$250M - $500M
619
$567M
$1B - $10B
619
$569M
$100M - $250M
619
$100M - $250M
619
$1B - $10B
618
$500M - $1B
617
$250M - $500M
617
$50M - $100M
617
$50M - $100M
616
$500M - $1B
616
$1B - $10B
616
$50M - $100M
616
$100M
$100M - $250M
616
$50M - $100M
616
$50M - $100M
615
$1B - $10B
614
$100M - $250M
614
$100M - $250M
614
$44M
$100M - $250M
613
$1B - $10B
613
$25M - $50M
613
$1M - $10M
612
$10M - $25M
612
$250M - $500M
611
$96M
$100M - $250M
611
$250M - $500M
611
$1.9B
$1B - $10B
610
$100M - $250M
610
$500M - $1B
609
$7.5M
$100M - $250M
609
$100M - $250M
609
$250M - $500M
609
$250M - $500M
608
$250M - $500M
608
$10M - $25M
608
$666M
$250M - $500M
607
$50M - $100M
607
$50M - $100M
607
$50M - $100M
607
$1B - $10B
606
$250M - $500M
606
$100M - $250M
606
$25M - $50M
605
$250M - $500M
605
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 WSP Danmark, Westdale Asset Management and Marmon Holdings, 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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Top companies by employee count
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