List of Companies Using Microsoft Defender
Prospecting companies using Microsoft Defender? Here they are, biggest first, including Crossfuze, Data Entry and New York City Corrections Dept. Open a company to see its revenue range, headcount, tech stack and the people to contact.
Company NameIndustryLocationFundingRevenueEmployees
$100M - $250M
234
$57M
$10M - $25M
234
$1M - $10M
234
$250M - $500M
234
$10M - $25M
234
$25M - $50M
233
$25M - $50M
233
$28M
$100M - $250M
233
$50M - $100M
233
$200K
$100M - $250M
233
$100M - $250M
233
$10M - $25M
233
$256M
$100M - $250M
232
$100M - $250M
232
$50M - $100M
232
$100M - $250M
232
$25M - $50M
232
<$1M
231
$50M - $100M
231
$25M - $50M
231
$100M - $250M
231
$100M - $250M
231
$25M - $50M
231
$1M - $10M
231
$250M - $500M
231
$10M - $25M
231
$50M - $100M
231
$100M - $250M
230
$50M - $100M
230
$25M - $50M
230
$50M - $100M
230
$584M
$100M - $250M
230
$10M - $25M
230
$76M
$1M - $10M
229
$77M
$10M - $25M
229
$100M - $250M
229
$1M - $10M
229
$2.5M
$250M - $500M
229
$100M - $250M
229
$50M - $100M
229
$10M - $25M
229
$100M - $250M
229
$100M - $250M
228
$1M - $10M
228
$10M - $25M
228
$50M - $100M
227
$9M
$100M - $250M
227
$25M - $50M
227
$50M - $100M
227
$1M - $10M
226
$100M - $250M
226
$7.7M
$50M - $100M
226
$25M - $50M
226
$10M - $25M
226
$100M - $250M
226
$500M - $1B
226
$5.3B
$100M - $250M
226
$100M - $250M
225
$100M - $250M
225
$10M - $25M
225
$50M - $100M
225
$100M - $250M
224
$10M - $25M
224
$500M - $1B
224
$100M - $250M
224
$1M - $10M
224
$50M - $100M
223
$438M
$10M - $25M
223
$25M - $50M
223
$50M - $100M
223
$100M - $250M
223
$100M - $250M
223
$80M
$10M - $25M
222
<$1M
222
$82M
$100M - $250M
222
$250M - $500M
222
$250M - $500M
222
$25M - $50M
222
$250M - $500M
222
$10M - $25M
222
$53M
$1M - $10M
222
$50M - $100M
222
$100M - $250M
222
$890K
$250M - $500M
221
$401M
$50M - $100M
221
$196M
$50M - $100M
221
$250M - $500M
221
$35M
$25M - $50M
221
$25M - $50M
221
$25M - $50M
221
$1M - $10M
221
$5.8M
<$1M
221
$100M - $250M
220
$25M - $50M
220
$2M
$1M - $10M
220
$10M - $25M
220
$10M - $25M
220
$50M - $100M
219
$100M - $250M
219
$25M - $50M
219
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 Crossfuze, Data Entry and New York City Corrections Dept.
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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