List of Companies Using Microsoft Defender
Prospecting companies using Microsoft Defender? Here they are, biggest first, including Maine Department of Labor, NTD | National Tire Distributors and QCP. Open a company to see its revenue range, headcount, tech stack and the people to contact.
Company NameIndustryLocationFundingRevenueEmployees
$25M - $50M
184
$50M - $100M
184
$50M - $100M
184
$10M - $25M
184
$1M - $10M
184
$1M - $10M
183
$1M - $10M
183
$25M
<$1M
183
$250M - $500M
183
$25M - $50M
183
$100M - $250M
183
$50M - $100M
183
<$1M
183
$10M - $25M
183
$250M - $500M
183
$1M - $10M
183
$25M - $50M
182
$100M - $250M
182
$50M - $100M
182
$10M - $25M
182
$500M - $1B
182
$50M - $100M
182
$390M
$100M - $250M
182
$13M
$100M - $250M
182
$10M - $25M
182
$250M - $500M
181
$100M - $250M
181
$100M - $250M
181
$25M - $50M
181
$100M - $250M
181
$25M - $50M
180
$100M
$25M - $50M
180
$105M
$100M - $250M
180
$100M - $250M
180
$10M - $25M
180
$25M - $50M
180
$10M - $25M
180
<$1M
180
$50M - $100M
180
$25M - $50M
179
$1M - $10M
179
$46M
$50M - $100M
179
$25M - $50M
179
$1M - $10M
179
$100M - $250M
179
$130M
$100M - $250M
179
$10M - $25M
178
$25M - $50M
178
$10M - $25M
178
$3.6M
$25M - $50M
178
$1M - $10M
178
$10M - $25M
178
$10M - $25M
178
$17M
$100M - $250M
177
<$1M
177
$10M - $25M
177
$1M - $10M
177
$50M - $100M
177
$1M - $10M
177
$50M - $100M
177
$100M - $250M
177
$25M - $50M
177
$100M - $250M
177
$152M
$100M - $250M
177
$25M - $50M
177
$25M - $50M
177
$100M - $250M
176
$50M - $100M
176
$100M - $250M
176
$36M
$100M - $250M
176
$50M - $100M
176
$100M - $250M
176
$143M
$25M - $50M
176
$1M - $10M
176
$100M - $250M
176
$50M - $100M
176
$100M - $250M
176
$100M - $250M
176
$10M - $25M
176
$100M - $250M
176
$7M
$100M - $250M
176
$10M - $25M
175
$10M - $25M
175
$250M - $500M
175
$100M - $250M
175
$10M - $25M
175
$10M - $25M
175
$50M - $100M
175
$10M - $25M
175
$331K
$100M - $250M
175
$6M
$25M - $50M
175
$25M - $50M
175
$14M
$10M - $25M
174
$100M - $250M
174
$173M
$100M - $250M
174
$50M - $100M
174
$1M - $10M
174
$100M - $250M
174
$1M - $10M
174
$186M
$100M - $250M
174
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 Maine Department of Labor, NTD | National Tire Distributors and QCP.
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.
