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Microsoft Security

Microsoft Defender

Stay ahead of online threats with Microsoft solutions for business and home.

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Discover a security solution that works with your IT budget

Defender for Business is included as part of Microsoft 365 Business Premium or as a standalone solution.

Microsoft Defender for Business

Originally starting from $3.00 now starting from $3.00

$3.00 $3.00


(Annual subscription—auto renews1)

An easy-to-use standalone product that includes:

  • Up to 300 users

  • Up to five devices per user

  • Enterprise-grade protection across your laptops, desktops, and mobile devices

  • Threat and vulnerability management

  • Next-generation antivirus protection

  • Endpoint detection and response

  • Automated investigation and response

Best value

Microsoft 365 Business Premium

Originally starting from $22.00 now starting from $22.00

$22.00 $22.00


(Annual subscription—auto renews1)

A full-featured package to save time and help keep you secure, Microsoft 365 Business Premium includes Microsoft Defender for Business, plus:

  • a

    Defender for Office 365 to help protect email from phishing attacks

  • a

    Improved security for work data on personal devices with Microsoft Intune

  • a

    Secure access to work apps with Microsoft Entra ID P1

  • a

    Enhanced protection against lost or stolen passwords with advanced multifactor authentication

  • a

    Data protection with Azure Information Protection and data loss prevention

  • a

    Archiving, e-discovery, and legal hold

  • a

    Best-in-class Microsoft 365 productivity apps and cloud services

  • a

    Collaboration via chat and online meetings in Microsoft Teams

  • a

    1 TB of cloud storage per user on OneDrive

Microsoft Defender for individuals

Seamlessly protect your personal data, computers, and phones against malicious threats with a simplified app for you and your family.

Traditional antivirus solutions aren’t enough

Modern threats require modern protection, and traditional antivirus solutions can’t keep up. Defender for Business helps you identify, protect against, detect, and respond to sophisticated cyberattacks, helping you to stay secure.

Cost-effective protection

Get comprehensive cybersecurity value at a price that works for your business.

Easy to use

Activate security policies out of the box with simple setup wizards.

Enterprise-grade device security

Get a complete set of prevention, protection, and response capabilities to thwart sophisticated cyberattacks.

Traditional antivirus solutions vs. Microsoft Defender for Business

Infographic image comparing Microsoft Defender for Business versus other vendors.

Key features

Microsoft Defender for Business is optimized to meet the needs of small and medium-sized businesses of up to 300 users.
Key features dashboard screenshot.


Discover weaknesses that pose the most urgent and highest risk to your business with threat and vulnerability management. Prioritize and remediate software vulnerabilities and misconfigurations, then proactively build a secure foundation for your environment.

Threat and vulnerability dashboard screenshot.


Minimize the places you’re vulnerable across devices and applications with attack surface reduction—leaving bad actors fewer ways to perform attacks. Help prevent and protect against threats at your front door with antimalware and antivirus protection on your devices and in the cloud.

Next-generation protection screenshot

Detect and respond

Detect and respond to incidents with endpoint detection and response to identify sophisticated threats and remove them from your environment.

Suspicious powershell Command line screenshot.


Scale your security operations and recover from cyberattacks with automated investigation and remediation, which examines alerts and resolves attacks.

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Microsoft Defender for Business

What does Microsoft Defender for Business do?

See how Defender for Business helps proactively protect your devices, informs you about trending threats, and automatically responds to security incidents. 
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Frequently asked questions

  • Microsoft Defender for Business is a device security solution that helps businesses with up to 300 employees protect against cybersecurity threats—including malware and ransomware—in an easy-to-use, cost-effective package.

  • Defender for Business servers is an add-on to Defender for Business or Microsoft 365 Business Premium. The add-on provides security for servers within Defender for Business, helping you protect all your endpoints using a single admin experience. Get simplified onboarding and management, with security policies activated out of the box to help you quickly secure servers. Identify threats and vulnerabilities to patch and protect your environment from ransomware, malware, and other threats.

  • IT service providers can use Microsoft 365 Lighthouse to view security incidents and alerts from Defender for Business across multiple customers in a single location. Management of Defender for Business via Microsoft 365 Lighthouse will come at a later date.

  • Securing devices is critical to safeguarding your organization from malicious actors attempting to attack or disrupt your business. Device security helps you protect, detect, and respond to these threats for desktops, laptops, and mobile devices.

  • Microsoft Defender Antivirus provides next-generation protection built into Windows devices and helps protect you from viruses, malware, and potentially unwanted applications. Defender for Business includes Defender Antivirus, and extends these capabilities with threat and vulnerability management, attack surface reduction, endpoint detection and response, and automated investigation and response.

Microsoft Defender for Business

[1] Cancellation policies for paid subscriptions may vary based on factors such as your customer status, your product, and your domain selections on Microsoft. You may cancel your subscription at any time in the Microsoft 365 admin center. Certain subscriptions may incur a cancellation fee. Learn how to cancel your Microsoft 365 subscirption or Microsoft Defender for Business subscription. When a subscription is canceled, all associated data will be deleted. Learn more about data retention, deletion, and destruction in Microsoft 365.

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