List of Companies Using Microsoft Defender
Prospecting companies using Microsoft Defender? Here they are, biggest first, including Practical DevSecOps, Pratt Indistries and Pulte Institute for Global Development, University of Notre Dame. Open a company to see its revenue range, headcount, tech stack and the people to contact.
Company NameIndustryLocationFundingRevenueEmployees
$1M - $10M
42
$1M - $10M
42
$10M - $25M
42
$25M - $50M
42
$25M - $50M
42
$500M - $1B
42
$10M - $25M
42
$1M - $10M
42
$10M - $25M
42
<$1M
42
$1B - $10B
42
$25M - $50M
42
$1M - $10M
41
$10M - $25M
41
<$1M
41
$10M - $25M
41
$25M - $50M
41
$50M - $100M
41
$1M - $10M
41
$10M - $25M
41
$43M
$10M - $25M
41
$3.5M
$25M - $50M
41
$1M - $10M
41
$1M - $10M
41
$25M - $50M
41
$25M - $50M
41
$100M - $250M
41
$25M - $50M
41
$10M - $25M
41
$25M - $50M
41
$10M - $25M
41
$25M - $50M
41
$1M - $10M
41
$25M - $50M
41
$1M - $10M
41
$25M - $50M
41
$50M - $100M
41
$100M - $250M
40
$25M - $50M
40
$25M - $50M
40
$100M - $250M
40
$10M - $25M
40
$1M - $10M
40
$10M - $25M
40
$10M - $25M
40
$31M
$1M - $10M
40
$1M - $10M
40
$1M - $10M
40
$114M
$1M - $10M
40
$25M - $50M
40
$10M - $25M
40
$10M - $25M
40
$25M - $50M
40
$25M - $50M
40
$10M - $25M
40
$25M - $50M
40
<$1M
40
$25M - $50M
40
$10M - $25M
40
$25M - $50M
40
$1M - $10M
40
$25M - $50M
40
$50M - $100M
40
$10M - $25M
40
$25M - $50M
40
$3.7M
$25M - $50M
40
$10M - $25M
39
$25M - $50M
39
$25M - $50M
39
$25M - $50M
39
$62M
$25M - $50M
39
$1M - $10M
39
$25M - $50M
39
$25M - $50M
39
$25M - $50M
39
$25M - $50M
39
<$1M
39
<$1M
39
$25M - $50M
39
$235M
$1M - $10M
39
$100M - $250M
39
<$1M
39
$10M - $25M
39
$25M - $50M
39
$34M
$10M - $25M
39
$25M - $50M
39
$11M
$25M - $50M
39
$25M - $50M
39
$25M - $50M
39
$10M - $25M
39
$1.2B
$10M - $25M
39
$10M - $25M
39
$50M - $100M
38
$4.6M
$1M - $10M
38
$135M
$50M - $100M
38
$30M
$50M - $100M
38
$50M - $100M
38
$1M - $10M
38
$1M - $10M
38
$25M - $50M
38
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 Practical DevSecOps, Pratt Indistries and Pulte Institute for Global Development, University of Notre Dame.
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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