List of Companies Using Microsoft Defender
Prospecting companies using Microsoft Defender? Here they are, biggest first, including Greenville Marriott, HP | Vyopta and HUB International (Merrillville). Open a company to see its revenue range, headcount, tech stack and the people to contact.
Company NameIndustryLocationFundingRevenueEmployees
$10M - $25M
24
$1M - $10M
24
$100M - $250M
24
$1M - $10M
24
$71M
$1M - $10M
24
$1.2M
$50M - $100M
24
$1M - $10M
24
$50M
$1M - $10M
24
$1M - $10M
24
$10M - $25M
24
$1M - $10M
24
$25M - $50M
24
$10M - $25M
24
$1M - $10M
24
$25M - $50M
24
$25M - $50M
24
$25M - $50M
24
$1M - $10M
24
$1M - $10M
24
$200K
$1M - $10M
24
$10M - $25M
24
$1M - $10M
24
$10M - $25M
23
$1M - $10M
23
$35M
$50M - $100M
23
<$1M
23
$1M - $10M
23
$1M - $10M
23
$1M - $10M
23
$10M - $25M
23
$250K
$10M - $25M
23
$1M - $10M
23
$1M - $10M
23
<$1M
23
$10M - $25M
23
$1M - $10M
23
$13M
$1M - $10M
23
<$1M
23
$24M
$1M - $10M
23
$52M
$10M - $25M
23
$1M - $10M
23
<$1M
23
$10M - $25M
23
$33M
$10M - $25M
23
$25M - $50M
23
$10M - $25M
23
$10M - $25M
23
$10M - $25M
23
$10M - $25M
23
$25M - $50M
23
$50M - $100M
22
$15M
$1M - $10M
22
$10M - $25M
22
$10M - $25M
22
$25M - $50M
22
$3M
$1M - $10M
22
$25M - $50M
22
$8M
$25M - $50M
22
$25M - $50M
22
$10M - $25M
22
$1M - $10M
22
$30M
$10M - $25M
22
$1M - $10M
22
$25M - $50M
22
<$1M
22
$10M - $25M
22
$1M - $10M
22
$25M - $50M
22
$10M - $25M
22
$1M - $10M
22
<$1M
22
$10M - $25M
22
$1M - $10M
22
$50M - $100M
22
$100M - $250M
22
$59M
$1M - $10M
22
$10M - $25M
22
$100M - $250M
22
$1M - $10M
22
$10M - $25M
22
$10M - $25M
22
$6.7M
$1M - $10M
22
$25M - $50M
22
$1M - $10M
22
$10M - $25M
22
$10M - $25M
22
$1M - $10M
22
$1M - $10M
22
$18M
$1M - $10M
22
$1M - $10M
22
$1M - $10M
22
$91M
$10M - $25M
22
$1M - $10M
22
$25M - $50M
22
$1M - $10M
22
$10M - $25M
22
$10M - $25M
21
$1M - $10M
21
$25M - $50M
21
<$1M
21
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 Greenville Marriott, HP | Vyopta and HUB International (Merrillville).
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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