List of Companies Using Microsoft Defender
Prospecting companies using Microsoft Defender? Here they are, biggest first, including SidePlate Connection Designs, Sunamerica Retirement and T2C | Top Tier Consulting, A Cognizant Company. Open a company to see its revenue range, headcount, tech stack and the people to contact.
Company NameIndustryLocationFundingRevenueEmployees
$1M - $10M
16
<$1M
16
$10M - $25M
16
$1M - $10M
16
$1M - $10M
16
$10M - $25M
16
$10M - $25M
16
$7.4M
$50M - $100M
16
$1M - $10M
16
$1M - $10M
15
$1M - $10M
15
$10M - $25M
15
$1M - $10M
15
$10M - $25M
15
$10M - $25M
15
$10M - $25M
15
$10M - $25M
15
$1M - $10M
15
<$1M
15
$10M - $25M
15
$1M - $10M
15
$1M - $10M
15
$30M
$10M - $25M
15
<$1M
15
$1M - $10M
15
$1M - $10M
15
$11M
$1M - $10M
15
$25M - $50M
15
<$1M
15
$10M - $25M
15
$10M - $25M
15
$1M - $10M
15
<$1M
15
$50M - $100M
15
$10M - $25M
15
<$1M
15
<$1M
15
$10M - $25M
15
$6.5M
$1M - $10M
15
$1M - $10M
15
$25M - $50M
15
$1M - $10M
15
$25M - $50M
15
<$1M
15
$10M - $25M
15
$10M - $25M
15
$1M - $10M
15
$10M - $25M
15
$344K
$1M - $10M
15
$10M - $25M
15
$10M - $25M
15
$1M - $10M
15
$10M - $25M
15
$1M - $10M
15
$10M - $25M
15
$1M - $10M
15
$1M - $10M
15
$1M - $10M
15
$1M - $10M
15
$10M - $25M
14
$1M - $10M
14
$10M - $25M
14
<$1M
14
$1M - $10M
14
$25M - $50M
14
$1M - $10M
14
<$1M
14
$1M - $10M
14
$32M
$10M - $25M
14
$1M - $10M
14
$1M - $10M
14
$25M - $50M
14
$1M - $10M
14
$10M - $25M
14
$1M - $10M
14
$1M - $10M
14
$10M - $25M
14
$855K
$1M - $10M
14
$10M - $25M
14
$1M - $10M
14
$1M - $10M
14
$10M - $25M
14
$1M - $10M
14
$1M - $10M
14
$25M - $50M
14
$1M - $10M
14
$250M - $500M
14
$1M - $10M
14
$32M
$1M - $10M
14
$1B - $10B
14
$10M - $25M
14
$10M - $25M
14
$1M - $10M
14
$10M - $25M
14
$10M - $25M
14
$10M - $25M
14
$5M
$25M - $50M
14
$10M - $25M
14
$10M - $25M
14
$10M - $25M
14
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 SidePlate Connection Designs, Sunamerica Retirement and T2C | Top Tier Consulting, A Cognizant Company.
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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