List of Companies Using Microsoft Defender
Prospecting companies using Microsoft Defender? Here they are, biggest first, including ZS | Medullan, BBH Solutions, Inc. and Catholic Charities of the Archdiocese of Milwaukee. Open a company to see its revenue range, headcount, tech stack and the people to contact.
Company NameIndustryLocationFundingRevenueEmployees
$10M - $25M
60
$50M - $100M
59
$50M - $100M
59
$50M - $100M
59
$250M - $500M
59
$1B - $10B
59
$100M - $250M
59
$271K
$100M - $250M
59
$25M - $50M
59
$50M - $100M
59
$10M - $25M
59
$25M - $50M
59
$50M - $100M
59
$25M - $50M
59
$1M - $10M
59
$10M - $25M
59
$25M - $50M
58
$10M - $25M
58
$25M - $50M
58
$1M - $10M
58
$100M - $250M
58
$100M - $250M
58
$1M - $10M
58
$100M - $250M
58
<$1M
58
$242M
$10M - $25M
58
$10M - $25M
58
$10M - $25M
58
$10M - $25M
58
$25M - $50M
58
$1M - $10M
57
$25M - $50M
57
$10M - $25M
57
$50M
$25M - $50M
57
$25M - $50M
57
<$1M
57
$25M
$25M - $50M
57
$4.4M
$1M - $10M
57
$500M - $1B
57
$10M - $25M
57
$100M - $250M
57
$1M - $10M
57
$1M - $10M
56
$25M - $50M
56
$10M - $25M
56
$50M - $100M
56
$100M - $250M
56
$1M - $10M
56
$10M - $25M
56
$1M - $10M
56
$25M - $50M
56
$100M - $250M
56
$10M - $25M
56
$10M - $25M
56
$25M
$10M - $25M
56
$5M
$1M - $10M
56
$1M - $10M
56
$250M - $500M
56
$25M - $50M
56
$25M - $50M
56
$25M - $50M
56
$1M - $10M
56
$10M - $25M
56
$25M - $50M
56
$1M - $10M
56
$25M - $50M
56
$25M - $50M
56
$7M
$50M - $100M
56
$1M - $10M
56
$1M - $10M
55
$17M
$1M - $10M
55
$25M - $50M
55
$50M - $100M
55
$50M - $100M
55
$25M - $50M
55
$50M - $100M
55
$10M - $25M
55
$25M - $50M
55
$1M - $10M
55
$25M - $50M
55
$49M
$1M - $10M
55
$50M - $100M
55
$25M - $50M
55
$1M - $10M
55
$50M - $100M
55
$25M - $50M
55
<$1M
55
$25M - $50M
54
$8M
$1M - $10M
54
$25M - $50M
54
$30M
$25M - $50M
54
$25M - $50M
54
$25M - $50M
54
$1M - $10M
54
$25M - $50M
54
$50M - $100M
54
$10M - $25M
54
$25M - $50M
54
$1M - $10M
54
$50M - $100M
54
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 ZS | Medullan, BBH Solutions, Inc. and Catholic Charities of the Archdiocese of Milwaukee.
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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