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Companies using Windows Defender by Microsoft Corporation in 2025
As of 2025, 4,939 verified companies use Windows Defender – across industries, company sizes, and geographies. This is real, verified data. Whether you’re looking to analyze the market, build a target list, or get a sales edge – this is your starting point.
What is Windows Defender by Microsoft Corporation?
Windows Defender by Microsoft, is a built-in security solution designed to protect Windows operating systems from malware, viruses, and other security threats. It is widely used to provide real-time protection, scanning, and threat removal. This technology is mainly used by IT departments and individual users across various industries for endpoint security and data protection.
Last updated date
August 17, 2025
Number of Companies using
4,939
The majority are based in the
United States
Most common industry?
Business Services
Windows Defender’s sample user list in 2025
Company Name
Country
Industry
Employees
Revenue
Product
Dell Technologies
United States
United States
Computer Equipment & Peripherals
108000
$95.6B
Windows Defender
Salesforce
United States
United States
Customer Relationship Management (CRM) Software
76453
$38.6B
Windows Defender
We have data on 4,939 companies that use Windows Defender. Our Windows Defender customers list is available for download and comes enriched with vital company specifics, including industry classification, organizational size, geographical location, funding rounds, and revenue figures, among others.
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Windows Defender users and customers by country
United States
United Kingdom
2.6K Companies
France
2.6K Companies
Australia
2.6K Companies
Canada
2.6K Companies
Where Windows Defender Shows Up Most
Windows Defender is used across a wide range of sectors:
Business Services
Custom Software & IT Services
Software
Manufacturing
Finance
From lean startups to global enterprises, Windows Defender’s footprint is wide, and that means opportunity.
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FAQs
Contact UsHow latest this data is?
This data is updated on August 17, 2025
What is Windows Defender?
Windows Defender, by Microsoft Corporation, is a built-in security solution designed to protect Windows operating systems from malware, viruses, and other security threats. It provides real-time protection, scanning, and threat removal.
How many companies are using Windows Defender in 2025?
As of 2025, there are 4,939 verified companies using Windows Defender.
What types of companies use Windows Defender?
Windows Defender is used across various industries, company sizes, and geographies.
What is the primary use of Windows Defender?
Windows Defender is mainly used by IT departments and individual users for endpoint security and data protection.
Where is Windows Defender most commonly used?
Windows Defender is most commonly used in the United States.