List of Companies Using Microsoft Defender
Prospecting companies using Microsoft Defender? Here they are, biggest first, including Lethbridge Polytechnic, Trinitas Regional Medical Center and Washington State Patrol. Open a company to see its revenue range, headcount, tech stack and the people to contact.
Company NameIndustryLocationFundingRevenueEmployees
$10M - $25M
951
$100M - $250M
951
$1M - $10M
950
$500M - $1B
949
$1B - $10B
946
$100M - $250M
946
$50M - $100M
945
$50M - $100M
945
$10M - $25M
943
$1B - $10B
942
$10M - $25M
941
$100M - $250M
941
$1M - $10M
938
$1B - $10B
938
$1B - $10B
937
$500M - $1B
936
$1B - $10B
936
$500M - $1B
935
$100M - $250M
935
$100M - $250M
934
$338M
$250M - $500M
933
$316M
$1B - $10B
933
$100M - $250M
932
$1M - $10M
932
$500M - $1B
932
$100M - $250M
931
$50M - $100M
931
$25M - $50M
931
$1M - $10M
930
$250M - $500M
930
$100M - $250M
930
$500M - $1B
930
$1B - $10B
928
$1B - $10B
928
$82M
$10B+
927
$74M
$250M - $500M
927
$500M - $1B
927
$1.8B
$1B - $10B
925
$10M - $25M
925
$50M - $100M
925
$1B - $10B
924
$50M - $100M
924
$250M - $500M
924
$250M - $500M
924
$250M - $500M
922
$1B - $10B
922
$250M - $500M
920
$100M - $250M
920
$500M - $1B
919
$500M - $1B
917
$25M - $50M
917
$100M - $250M
916
$100M - $250M
916
$777M
$10B+
915
$1M - $10M
914
$100M - $250M
912
$250M - $500M
912
$500M - $1B
912
$1M - $10M
912
$500M - $1B
912
$1M - $10M
912
$500M - $1B
912
$100M - $250M
912
$1B - $10B
912
$1B - $10B
911
$1M - $10M
908
$50M - $100M
907
$25M - $50M
907
$500M - $1B
906
$1M - $10M
905
$500M - $1B
905
$67M
$1B - $10B
904
$50M - $100M
904
$5M
$50M - $100M
903
$50M - $100M
903
$500M - $1B
903
$124M
$500M - $1B
903
$500M - $1B
901
$50M - $100M
900
$250M - $500M
900
$471M
$250M - $500M
899
$250M - $500M
899
$400M
$500M - $1B
896
$10M - $25M
895
$50M - $100M
895
$50M - $100M
895
$1.6M
$100M - $250M
894
$100M - $250M
894
$25M - $50M
894
$250M - $500M
894
$100M - $250M
893
$50M - $100M
893
$50M - $100M
892
$500M - $1B
891
$250M - $500M
891
$100M
$500M - $1B
891
$50M - $100M
891
$1M - $10M
891
$10B+
891
$250M - $500M
890
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 Lethbridge Polytechnic, Trinitas Regional Medical Center and Washington State Patrol.
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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