List of Companies Using Microsoft Defender
Prospecting companies using Microsoft Defender? Here they are, biggest first, including HMT LLC, IP Australia and Qubika. Open a company to see its revenue range, headcount, tech stack and the people to contact.
Company NameIndustryLocationFundingRevenueEmployees
$1B - $10B
890
$50M - $100M
890
$100M - $250M
890
$10M
$100M - $250M
890
$50M - $100M
890
$500M - $1B
889
$1B - $10B
889
$100M - $250M
888
$1B - $10B
888
$100M - $250M
887
$1B - $10B
886
$10B+
886
$316M
$1B - $10B
886
$10M - $25M
884
$10M - $25M
884
$881M
$100M - $250M
884
$2.5M
$250M - $500M
884
$1B - $10B
883
$47M
$250M - $500M
883
$10M - $25M
882
$112M
$1B - $10B
882
$100M - $250M
882
$118M
$50M - $100M
879
$50M - $100M
879
$100M - $250M
879
$250M - $500M
878
$1.8M
$50M - $100M
877
$100M - $250M
876
$250M - $500M
875
$100M - $250M
875
$10B+
874
$500M - $1B
874
$50M - $100M
874
$100M - $250M
873
$500M - $1B
872
$10M - $25M
872
$100M - $250M
872
$3.1B
$100M - $250M
871
$50M - $100M
870
$100M - $250M
870
$93M
$10M - $25M
869
$10M - $25M
869
$250M - $500M
869
$10M - $25M
868
$25M - $50M
867
$250M - $500M
867
$1.2M
$25M - $50M
866
$6.8K
$50M - $100M
866
$90M
$250M - $500M
866
$274M
$500M - $1B
866
$1B - $10B
864
$500M - $1B
864
$25M - $50M
863
$940M
$1B - $10B
862
$500M - $1B
862
$1B - $10B
859
$1M - $10M
859
$500M - $1B
859
$10M - $25M
858
$50M - $100M
858
$500M - $1B
858
$250M - $500M
858
$100M - $250M
857
$100M - $250M
857
$1B - $10B
856
$250M - $500M
856
$100M - $250M
855
$250M - $500M
855
$25M - $50M
853
$50M - $100M
851
$250M - $500M
851
$250M - $500M
851
$250M - $500M
851
$399M
$100M - $250M
850
$1M - $10M
849
$500M - $1B
848
$975M
$500M - $1B
847
$325M
$1B - $10B
846
$10M - $25M
846
$100M - $250M
846
$500M - $1B
845
$100M - $250M
845
$50M - $100M
844
$500M - $1B
843
$1B - $10B
842
$1B - $10B
842
$500M - $1B
842
$50M - $100M
842
$100M - $250M
842
$283K
$100M - $250M
841
$10M - $25M
841
$290M
$10B+
841
$1M - $10M
840
$100M - $250M
840
$50M - $100M
839
$50M - $100M
839
$1B - $10B
838
$500M - $1B
838
$500M - $1B
838
$100M - $250M
837
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 HMT LLC, IP Australia and Qubika.
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
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
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