List of Companies Using Microsoft Defender
Prospecting companies using Microsoft Defender? Here they are, biggest first, including Workhuman, Xebia Academy and ZEISS Ophthalmology USA. Open a company to see its revenue range, headcount, tech stack and the people to contact.
Company NameIndustryLocationFundingRevenueEmployees
$131M
$500M - $1B
1K
<$1M
1K
1K
<$1M
1K
$1M - $10M
1K
$250M - $500M
1K
$100M - $250M
999
$250M - $500M
995
<$1M
995
$310M
$1B - $10B
994
$100M - $250M
993
$250M - $500M
992
$8.2M
$250M - $500M
992
$500M - $1B
991
$50M - $100M
991
$283K
$100M - $250M
990
$500M - $1B
989
$2.5B
$50M - $100M
989
$204M
$1B - $10B
989
$1M - $10M
988
$10B+
988
$1B - $10B
985
$1B - $10B
984
$50M - $100M
983
$1.6B
$1B - $10B
983
$500M - $1B
983
$50M - $100M
982
$500M - $1B
981
$1B - $10B
980
$100M - $250M
980
$100M - $250M
980
$10M - $25M
980
$1B - $10B
980
$50M - $100M
978
$60M
$250M - $500M
977
$500M - $1B
976
$250M - $500M
976
$500M - $1B
974
$100M - $250M
973
$100M - $250M
973
$500M - $1B
973
$250M - $500M
973
$500M - $1B
972
$10M - $25M
970
$250M - $500M
970
$1B - $10B
969
$500M - $1B
969
$100M - $250M
968
$500M - $1B
968
$500M - $1B
965
$250M - $500M
964
$5.2M
$100M - $250M
964
$100M - $250M
964
$250M - $500M
964
$250M - $500M
964
$250M - $500M
964
$1B - $10B
963
$1M - $10M
962
$50M - $100M
961
$250M - $500M
960
$10M - $25M
960
$1B - $10B
959
$1M - $10M
956
$1B - $10B
955
$100M - $250M
955
$100M - $250M
955
$100M - $250M
953
$371M
$250M - $500M
953
$500M - $1B
953
$50M - $100M
952
$1M - $10M
950
$250M - $500M
950
$70M
$250M - $500M
949
$54M
$1B - $10B
948
$10M - $25M
948
$1B - $10B
947
$316M
$1B - $10B
947
$100M - $250M
947
$1B - $10B
946
$100M - $250M
945
$500M - $1B
943
$10M - $25M
943
$500M - $1B
943
$7.5M
$500M - $1B
942
$500M - $1B
942
$1B - $10B
941
$555M
$250M - $500M
940
$100M - $250M
940
$82M
$10B+
938
$1B - $10B
938
$50M - $100M
937
$25M - $50M
937
$500M - $1B
936
$1B - $10B
936
$1B - $10B
935
$1M - $10M
935
$500M - $1B
935
$250M - $500M
934
$1M - $10M
934
$10M - $25M
934
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 Workhuman, Xebia Academy and ZEISS Ophthalmology USA.
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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