List of Companies Using Microsoft Defender
Prospecting companies using Microsoft Defender? Here they are, biggest first, including Levi9 Technology Services, Isobar and Dentsu Digital. Open a company to see its revenue range, headcount, tech stack and the people to contact.
Company NameIndustryLocationFundingRevenueEmployees
$50M - $100M
934
$1B - $10B
933
$100M - $250M
932
$1M - $10M
930
$338M
$250M - $500M
929
$250M - $500M
928
$1B - $10B
928
$100M - $250M
928
$250M - $500M
927
$10M - $25M
926
$74M
$250M - $500M
926
$500M - $1B
926
$100M - $250M
925
$50M - $100M
925
$1M - $10M
924
$100M - $250M
924
$50M - $100M
924
$100M - $250M
923
$25M - $50M
923
$500M - $1B
921
$500M - $1B
921
$100M - $250M
921
$400M
$500M - $1B
918
$1B - $10B
916
$6.8K
$50M - $100M
916
$250M - $500M
916
$500M - $1B
916
$1M - $10M
915
$500M - $1B
915
$1M - $10M
915
$2.5M
$250M - $500M
915
$1.8B
$1B - $10B
914
$250M - $500M
914
$250M - $500M
913
$50M - $100M
912
$100M - $250M
911
$100M - $250M
910
$100M - $250M
910
$500M - $1B
910
$250M - $500M
909
$100M - $250M
908
$500M - $1B
908
$777M
$10B+
908
$500M - $1B
908
$100M
$500M - $1B
908
$1B - $10B
908
$10B+
907
$250M - $500M
907
$1M - $10M
907
$25M - $50M
907
$250M - $500M
907
$100M - $250M
906
$100M - $250M
906
$500M - $1B
906
$100M - $250M
905
$500M - $1B
904
$50M - $100M
904
$250M - $500M
904
$5M
$50M - $100M
903
$50M - $100M
903
$1B - $10B
903
$100M - $250M
903
$50M - $100M
903
$500M - $1B
902
$100M - $250M
902
$50M - $100M
901
$316M
$1B - $10B
900
$47M
$250M - $500M
900
$67M
$1B - $10B
899
$1B - $10B
899
$10M - $25M
898
$50M - $100M
898
$250M - $500M
898
$100M - $250M
898
$10M - $25M
897
$50M - $100M
896
$124M
$500M - $1B
896
$112M
$1B - $10B
895
$50M - $100M
895
$10B+
895
$25M - $50M
895
$100M - $250M
894
$250M - $500M
894
$471M
$500M - $1B
893
$1B - $10B
892
$50M - $100M
892
$50M - $100M
891
$100M - $250M
891
$1M - $10M
891
$1M - $10M
890
$1.6M
$100M - $250M
890
$1B - $10B
890
$250M - $500M
889
$50M - $100M
888
$250M - $500M
887
$1B - $10B
886
$1B - $10B
886
$10M - $25M
885
$100M - $250M
885
$500M - $1B
885
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 Levi9 Technology Services, Isobar and Dentsu Digital.
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.
Search by Industry
ConstructionIT Services and IT ConsultingSoftware DevelopmentFinancial ServicesReal EstateHospitals and Health CareAdvertising ServicesNon-profit OrganizationsInsuranceLaw PracticeRetailWellness and Fitness ServicesBusiness Consulting and ServicesEducation Administration ProgramsMotor Vehicle ManufacturingTechnology, Information and InternetFood and Beverage ServicesStaffing and RecruitingAccountingOil and GasHospitalityAppliances, Electrical, and Electronics ManufacturingManufacturingArchitecture and PlanningMachinery Manufacturing
Search by Country
United StatesUnited KingdomCanadaGermanyAustraliaFranceNetherlandsIndiaSpainSwitzerlandItalySwedenBrazilBelgiumSingaporeIrelandUnited Arab EmiratesDenmarkSouth AfricaIsraelNew ZealandNorwayFinland
Search by Technology
Top companies by employee count
Top companies in United States by employee countTop companies in United Kingdom by employee countTop companies in Canada by employee countTop companies in Germany by employee countTop companies in France by employee countTop companies in Australia by employee countTop companies in Netherlands by employee countTop companies in India by employee countTop companies in Spain by employee countTop companies in Switzerland by employee countTop companies in Sweden by employee countTop companies in Italy by employee countTop companies in Denmark by employee countTop companies in Brazil by employee countTop companies in Ireland by employee count
1-888-653-2347 
support@leadiq.com © LeadIQ, Inc. All rights reserved.
