List of Companies Using Microsoft Defender
Prospecting companies using Microsoft Defender? Here they are, biggest first, including Swish, science + computing AG and Allegheny Science & Technology. Open a company to see its revenue range, headcount, tech stack and the people to contact.
Company NameIndustryLocationFundingRevenueEmployees
$50M - $100M
94
$10M - $25M
94
$100M - $250M
93
$10M - $25M
93
$10M - $25M
93
$10M - $25M
93
$25M - $50M
93
$1M - $10M
93
$10M - $25M
93
$100M - $250M
93
$25M - $50M
93
$50M - $100M
93
$50M - $100M
93
$25M - $50M
93
$10M - $25M
93
$25M - $50M
93
$1M - $10M
93
$50M - $100M
92
$100M - $250M
92
$25M - $50M
92
$1M - $10M
92
$10M - $25M
92
$50M - $100M
92
$25M - $50M
92
$50M - $100M
92
$25M - $50M
92
$100M - $250M
92
$100M - $250M
92
$25M - $50M
92
$22M
$1M - $10M
92
$100M - $250M
91
$50M - $100M
91
$25M - $50M
91
$250M - $500M
91
$100M - $250M
91
$10B+
91
$1M - $10M
91
$50M - $100M
91
$50M - $100M
91
$1M - $10M
91
$25M - $50M
91
$1M - $10M
91
$250M - $500M
91
$50M - $100M
91
$25M - $50M
91
$3.7M
$1M - $10M
91
$100M - $250M
90
$50M - $100M
90
$50M - $100M
90
$100M - $250M
90
$1M - $10M
90
<$1M
90
$10M - $25M
90
$10M - $25M
90
$250M - $500M
90
$1M - $10M
90
$25M - $50M
90
$446M
$50M - $100M
90
$25M - $50M
90
$500M - $1B
90
$50M - $100M
90
$10M - $25M
90
$14M
$1M - $10M
89
$10M - $25M
89
$25M - $50M
89
$100M - $250M
89
$25M - $50M
89
$50M - $100M
89
$10M - $25M
89
$1M - $10M
89
$25M - $50M
89
$1M - $10M
89
$1M - $10M
89
$100M - $250M
89
$185M
$25M - $50M
88
$1M - $10M
88
$1M - $10M
88
$1M - $10M
88
<$1M
88
$44M
$50M - $100M
88
$10M - $25M
88
$25M - $50M
88
$50M - $100M
88
$10M
$10M - $25M
88
$25M - $50M
88
$3M
$50M - $100M
88
$50M - $100M
88
$50M - $100M
88
$100M - $250M
88
$50M - $100M
88
$10M - $25M
87
$17M
$25M - $50M
87
$41M
$10M - $25M
87
$10M - $25M
87
$25M - $50M
87
$100M - $250M
87
$10M - $25M
87
$100M - $250M
87
$1M - $10M
87
$4.5M
$250M - $500M
87
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 Swish, science + computing AG and Allegheny Science & Technology.
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.
