List of Companies Using Microsoft Defender
Prospecting companies using Microsoft Defender? Here they are, biggest first, including SOUTHWORKS, Tech Holding and Ullink - now part of Broadridge Trading and Connectivity Solutions. Open a company to see its revenue range, headcount, tech stack and the people to contact.
Company NameIndustryLocationFundingRevenueEmployees
$10M - $25M
154
$50M - $100M
154
$1B - $10B
154
$1M - $10M
154
$1M - $10M
153
$100M - $250M
153
$1M - $10M
153
$25M - $50M
153
$250M - $500M
153
$12M
$25M - $50M
153
$1M - $10M
153
$25M - $50M
153
$50M - $100M
153
$25M - $50M
152
$10M - $25M
152
$100M - $250M
152
$100M - $250M
152
$1M - $10M
152
$1M - $10M
152
$1M - $10M
152
$500M - $1B
152
$25M - $50M
152
$100M - $250M
151
$50M - $100M
151
$50M - $100M
151
$28M
$100M - $250M
151
$1M - $10M
151
$50M - $100M
151
$100M - $250M
151
$10M - $25M
151
$50M - $100M
151
$500M - $1B
151
$100M - $250M
151
$100M - $250M
151
$100M - $250M
151
$1M - $10M
151
$1M - $10M
151
$10M - $25M
151
$1M - $10M
150
$100M - $250M
150
$100M - $250M
150
$49M
$25M - $50M
150
$290M
$250M - $500M
150
$10M - $25M
150
$1M - $10M
150
$10M - $25M
150
$25M - $50M
150
$50M
$50M - $100M
149
$50M - $100M
149
$1M - $10M
149
$1M - $10M
149
$100M - $250M
149
$1M - $10M
149
$1M - $10M
149
$25M - $50M
149
$100M - $250M
149
$100M - $250M
148
$112M
$250M - $500M
148
$1M - $10M
148
$100M - $250M
148
$1M - $10M
148
$1M - $10M
148
$1M - $10M
148
$50M - $100M
148
$100M - $250M
148
$100M - $250M
148
$371M
$50M - $100M
148
$50M - $100M
148
$100M - $250M
148
<$1M
148
$25M - $50M
147
$25M - $50M
147
$10M - $25M
147
$1B - $10B
147
$2.3M
$100M - $250M
147
$25M - $50M
147
$25M - $50M
147
$1M - $10M
147
$10M - $25M
146
$1B - $10B
146
$1M - $10M
146
$10M - $25M
146
$50M - $100M
146
$50M - $100M
146
$100M - $250M
146
$25M - $50M
146
$4M
$250M - $500M
146
$50M - $100M
145
$50M - $100M
145
$31M
$100M - $250M
145
$25M - $50M
145
$100M - $250M
145
$37M
$100M - $250M
145
$25M - $50M
145
$1M - $10M
145
$500M - $1B
145
$25M - $50M
145
$100M - $250M
145
$100M - $250M
145
$25M - $50M
145
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 SOUTHWORKS, Tech Holding and Ullink - now part of Broadridge Trading and Connectivity Solutions.
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.
