List of Companies Using Microsoft Defender
Prospecting companies using Microsoft Defender? Here they are, biggest first, including Reliance Cyber, Samtek Inc and Sheraton Imperial Hotel. Open a company to see its revenue range, headcount, tech stack and the people to contact.
Company NameIndustryLocationFundingRevenueEmployees
$1M - $10M
81
$100M - $250M
81
$100M - $250M
81
$50M - $100M
81
$1M - $10M
81
$67M
$1M - $10M
81
$1M - $10M
81
$25M - $50M
81
$50M - $100M
81
$25M - $50M
80
$50M - $100M
80
$50M - $100M
80
$10M - $25M
80
$6.3M
$25M - $50M
80
$25M - $50M
80
$10M - $25M
80
$1M - $10M
80
$10M - $25M
80
$71M
$100M - $250M
80
$10M - $25M
80
$1M - $10M
80
$100M - $250M
80
$10M - $25M
79
$50M - $100M
79
$100M - $250M
79
$100M - $250M
79
$25M - $50M
79
$10M - $25M
79
$4.3M
$25M - $50M
79
$25M - $50M
79
$75M
$50M - $100M
79
$50M - $100M
79
$1M - $10M
79
$1M - $10M
79
$50M - $100M
79
$10M - $25M
79
$50M - $100M
79
$25M - $50M
79
$25M
$50M - $100M
79
$50M - $100M
79
$250M - $500M
79
$100M - $250M
78
$50M - $100M
78
$50M - $100M
78
$677K
$50M - $100M
78
$1M - $10M
78
$25M - $50M
78
$344M
$25M - $50M
78
$1M - $10M
78
$50M - $100M
78
<$1M
78
$500M - $1B
78
$50M - $100M
78
$25M - $50M
78
$25M - $50M
78
$1M - $10M
78
$1M - $10M
78
$50M - $100M
78
$1M - $10M
78
$250M - $500M
78
$50M - $100M
78
$25M - $50M
78
$1B - $10B
78
$100M - $250M
78
$25M - $50M
78
$50M - $100M
78
$1M - $10M
78
$1M - $10M
78
$1M - $10M
77
$10M - $25M
77
$25M - $50M
77
$1M - $10M
77
$25M - $50M
77
$4.7M
$100M - $250M
77
$1M - $10M
77
$57M
$10M - $25M
77
$100M - $250M
77
$25M - $50M
77
$50M - $100M
77
$10M - $25M
77
$1M - $10M
77
$25M - $50M
77
$50M - $100M
77
$10M - $25M
77
$50M - $100M
77
$1M - $10M
77
$210M
$100M - $250M
76
$41M
$10M - $25M
76
$25M - $50M
76
$100M - $250M
76
$1.7M
$1M - $10M
76
$10M - $25M
76
$50M - $100M
76
$15M
$100M - $250M
76
$50M - $100M
76
$6.8M
$1M - $10M
76
$50M - $100M
76
<$1M
76
$10M - $25M
76
$1M - $10M
76
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 Reliance Cyber, Samtek Inc and Sheraton Imperial Hotel.
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.
