List of Companies Using Microsoft Defender
Prospecting companies using Microsoft Defender? Here they are, biggest first, including InterVenture, Oxford University Press and Rocket EMS. Open a company to see its revenue range, headcount, tech stack and the people to contact.
Company NameIndustryLocationFundingRevenueEmployees
$1M - $10M
219
$1B - $10B
219
$50M - $100M
219
$1B - $10B
219
$50M - $100M
218
$25M - $50M
218
$50M - $100M
218
$50M - $100M
218
$100M - $250M
218
$50M - $100M
218
$250M - $500M
218
$1M - $10M
218
$100M - $250M
218
$100M - $250M
217
$10M - $25M
216
$250M - $500M
216
$1B - $10B
216
$50M - $100M
216
$100M - $250M
216
$75M
$25M - $50M
216
$50M - $100M
216
$1M - $10M
216
$10M - $25M
216
$25M - $50M
215
$100M - $250M
215
$1M - $10M
215
$1M - $10M
215
$50M - $100M
215
$1M - $10M
215
$100M - $250M
215
<$1M
215
$50M - $100M
215
$25M - $50M
214
$10M - $25M
214
$96M
$50M - $100M
214
$192M
$50M - $100M
214
$250M - $500M
214
$1M - $10M
214
$100M - $250M
214
$1.3M
$1M - $10M
214
$250M - $500M
214
$611K
$1M - $10M
214
$500M - $1B
213
$100M - $250M
213
$250M - $500M
213
$250M - $500M
213
$2.1B
$1B - $10B
213
$100M - $250M
213
$50M - $100M
213
$100M - $250M
213
<$10M
213
$1M - $10M
213
$250M - $500M
213
$250M - $500M
213
$100M - $250M
212
$25M - $50M
212
$2.5M
$25M - $50M
212
$1M - $10M
212
$100M - $250M
212
$250M - $500M
212
$250M - $500M
212
$395M
$25M - $50M
212
$323M
$250M - $500M
212
$1B - $10B
212
$1M - $10M
212
$10M - $25M
212
$199M
$25M - $50M
211
$10M - $25M
211
$100M - $250M
211
$1M - $10M
211
$315M
$25M - $50M
211
$25M - $50M
211
$50M - $100M
210
$25M - $50M
210
$10M - $25M
210
$50M - $100M
210
$100M - $250M
210
$25M - $50M
210
$10B+
209
$100M - $250M
209
$2.9M
$1M - $10M
209
$100M - $250M
209
$25M - $50M
209
$120M
$10M - $25M
209
$100M - $250M
208
$50M - $100M
208
$100M - $250M
208
$250M - $500M
208
$1M - $10M
208
$50M - $100M
208
$50M - $100M
208
$1M - $10M
208
$100M - $250M
208
$50M - $100M
208
$50M - $100M
208
$100M - $250M
207
$50M - $100M
207
$100M - $250M
207
$1B - $10B
207
$500M - $1B
207
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 InterVenture, Oxford University Press and Rocket EMS.
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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