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Microsoft Security

Microsoft Defender

Get trusted cybersecurity protection for your business and home with Microsoft Defender.

Get industry-leading cybersecurity protection for your business

Help protect your business with AI-powered capabilities that detect and respond rapidly to cyberthreats such as phishing, malware, and ransomware. Defender for Business is included in Microsoft 365 Business Premium or available as a standalone subscription.

Microsoft Defender for Business

Protect devices from cyberthreats with an enterprise-grade, AI-powered security solution.
$3.00
user/month, paid yearly
(Annual subscription—auto renews)1
Buy now Free 30-day trial
See trial terms2
  • Up to 300 users and up to five devices per user, with no minimum device requirement
  • Enterprise-grade device protection for Windows, MacOS, iOS, and Android devices
  • Wizard-based onboarding and simplified management experience
  • Vulnerability management to identify weaknesses and strengthen security
  • Next-generation antivirus protection to block new and emerging threats
  • AI-powered endpoint detection and response with automatic attack disruption to disrupt in-progress ransomware attacks in real-time
  • Automated investigation and remediation to automatically resolve most cyberthreats
  • Monthly security summary reports to track your protection
  • Server protection available as an add-on
Included:
Best security value

Microsoft 365 Business Premium

Grow your business with productivity apps and comprehensive security designed for up to 300 employees.
$22.00
user/month, paid yearly
(Annual subscription—auto renews)1
Buy now Free 30-day trial
See trial terms2
  • Includes everything in Business Standard plus:
  • Protect your devices with AI-powered ransomware protection in Microsoft Defender for Business
  • Protect email from phishing attacks powered by AI-powered language models using Microsoft Defender for Office 365
  • Protect work data on personal and company-owned devices with Microsoft Intune P1
  • Safeguard identities and access to work apps using Microsoft Entra ID
  • Protect against lost or stolen passwords with multifactor authentication using Microsoft Entra ID
  • Prevent data loss through data protection and sensitivity labeling for files with Microsoft Purview Information Protection
  • Includes lifecycle management, e-discovery, and legal hold via Microsoft Purview Data Loss Prevention
Apps and services included:
Best security value

Microsoft 365 Business Premium (no Teams)

Grow your business with productivity apps and comprehensive security designed for up to 300 employees.
$18.79
user/month, paid yearly
(Annual subscription—auto renews)1
Buy now Free 30-day trial
See trial terms2
  • Includes everything in Business Standard plus:
  • Protect your devices with AI-powered ransomware protection in Microsoft Defender for Business
  • Protect email from phishing attacks powered by AI-powered language models using Microsoft Defender for Office 365
  • Protect work data on personal and company-owned devices with Microsoft Intune P1
  • Safeguard identities and access to work apps using Microsoft Entra ID
  • Protect against lost or stolen passwords with multifactor authentication using Microsoft Entra ID
  • Prevent data loss through data protection and sensitivity labeling for files with Microsoft Purview Information Protection
  • Includes lifecycle management, e-discovery, and legal hold via Microsoft Purview Data Loss Prevention
Apps and services included:

Choose the right plan for your business

Microsoft Defender for Business

$3.00
user/month, paid yearly
(Annual subscription—auto renews)1
Buy now
See trial terms2

Microsoft 365 Business Premium

$22.00
user/month, paid yearly
(Annual subscription—auto renews)1
Buy now
See trial terms2

Microsoft 365 Business Premium (no Teams)

$18.79
unit/month, paid yearly
(Annual subscription—auto renews)1
Buy now
See trial terms2
Threat intelligence: Help protect against ransomware, malware, and other cyberthreats with enterprise-grade security across devices.
Attack surface reduction: Reduce potential cyberattack surfaces with network protection, firewall, and other attack surface reduction rules.
Web category blocking: Track and regulate access to websites based on content categories.
Centralized management: Get centralized management and reporting through the Microsoft Defender portal.
Simplified client configuration: Get started easily with a setup wizard that helps organizations configure Defender for Business.
Cross platform support: Get device support across Windows, MacOS, iOS, and Android.
Endpoint detection and response: Proactively search for new and unknown cyberthreats with AI and machine learning to monitor devices for unusual or suspicious activity, and initiate a response.
Automatic attack disruption: Automatically disrupt in-progress human-operated ransomware attacks by containing compromised users and devices.
Automated investigation and response: Investigate alerts and automatically respond to most cybersecurity threats with 24x7 automated responses.
Conditional access: Help employees securely access business apps wherever they work with conditional access, while helping prevent unauthorized access.
Multifactor authentication: Prevent unauthorized access to systems by requiring users to provide more than one form of authentication when signing in.
Windows device setup and management: Remotely manage and monitor Windows devices by configuring device policies, setting up security settings, and managing updates and apps.
Mobile device management: Remotely manage and monitor mobile devices by configuring device policies, setting up security settings, and managing updates and apps.
Mobile app management: Manage and secure mobile apps on users’ devices.
Microsoft 365 protection: Help protect all the different components of the Microsoft 365 platform, including email, Microsoft Teams, and SharePoint.
Safe links: Scan links in emails and documents for malicious URLs, and block or replace them with a safe link.
Safe attachments: Scan attachments for malicious content, and block or quarantine them if necessary.
Antiphishing: Help protect users from phishing emails by identifying and blocking suspicious emails, and provide users with warnings and tips to help spot and avoid phishing attempts.
Message encryption: Help protect sensitive data by encrypting emails and documents so that only authorized users can read them.
Data loss prevention: Help prevent risky or unauthorized use of sensitive data on apps, services, and devices.
Information Protection: Discover, classify, label and protect sensitive data wherever it lives and help prevent data breaches
E-discovery: Help organizations find and manage information that might be relevant to legal or regulatory matters.
Litigation hold: Preserve and retain data in the case of legal proceedings or investigations to ensure content can’t be deleted or modified.

Access an AI-powered chat for work with commercial data protection with Microsoft 365 Copilot, now available as an add-on6

Available as an add-on

Available as an add-on

Collaborate on desktop, web, and mobile versions of Outlook, Word, Excel, PowerPoint, and OneNote (plus Access for PC only).

Communicate using Exchange email hosting with a custom business email (name@yourbusiness.com).

Use personal file storage and sharing with OneDrive.

Host secure, organized meetings with audio, video, screen sharing, and the option to record.

Get additional Microsoft 365 services, including SharePoint Online, Microsoft Viva Engage, and Microsoft Planner.

Make it easier for your customers to schedule and manage appointments with Microsoft Bookings.

Access help and troubleshooting tools, videos, articles, and forums.

Get phone and online support anytime.

Get technical support for installation, setup, configuration, and general usage.

Get a financially backed 99.9% uptime guarantee.

Secure your business with more than 300 employees

Microsoft Security capabilities are included in Microsoft 365 E3 and E5 suites.
See plans and pricing

How traditional antivirus solutions
compare to Defender for Business

More about the diagram

Frequently asked questions

  • Defender for Business is an AI-powered, enterprise-grade device security solution that helps businesses with up to 300 employees protect against ransomware and other cyberthreats in an easy-to-use and 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 cyberthreats and vulnerabilities to patch and protect your environment from ransomware, malware, and other cyberthreats.
  • IT service providers can use Microsoft 365 Lighthouse view insights from Defender for Business across multiple customers in a single location. This includes multi-tenant list views of incidents and alerts across tenants and notifications via email. Default baselines can be used to scale customer tenant onboarding, and vulnerability management capabilities help IT service providers see trends in secure score, exposure score and recommendations to improve tenants.
  • Securing devices is critical to safeguarding your organization from malicious actors attempting to disrupt your business with cyberattacks. Device security helps to protect, detect, and respond to these cyberthreats for desktops, laptops, and mobile devices.
  • Microsoft Defender Antivirus provides next-generation protection built into Windows devices, helping protect them from viruses, malware, and potentially unwanted applications. Defender for Business includes Defender Antivirus capabilities, and extends protection to encompass threat and vulnerability management, attack surface reduction, endpoint detection and response, and automated investigation and remediation.
  • Microsoft Defender for Business is designed for small and medium-sized businesses with up to 300 users. It provides AI-powered, enterprise-grade cyberthreat protection that includes endpoint detection and response with automatic attack disruption, automated investigation and remediation, and other capabilities. Cross-platform support provides protection for Windows, MacOS, Android, and iOS devices. 

    Microsoft Defender for individuals and families helps people stay safer online. It provides antivirus protection, antiphishing protection, identity theft monitoring, credit monitoring3, and privacy protection4. It also offers identity theft insurance up to USD1 million to cover restoration costs and restoration support that’s available anytime, day or night.5

    Microsoft Defender for Business is a comprehensive security solution for businesses, while Microsoft Defender for individuals and families is an all-in-one online protection app for the home.

Microsoft Defender for Business

Try free for 30 days
  1. [1]
    Once your paid subscription begins, you have a 7-day cancellation window to receive a prorated refund, only paying for what you use. You may cancel your subscription at any time in the Microsoft 365 admin center. Learn how to cancel your Microsoft 365 subscription. When a subscription is canceled, all associated data will be deleted. Learn more about data retention, deletion, and destruction in Microsoft 365.
  2. [2]
    After your one-month free trial ends, your subscription will automatically convert to a paid subscription and you’ll be charged the applicable subscription fee based on the subscription term and billing plan you select. Cancel anytime during your free trial to stop future charges. A credit card is required to sign up. Storage for trials will be limited. Microsoft reserves the right to suspend access to its products and services if payment is not received after your one-month free trial ends. Learn more.
  3. [3]
    Feature is available in the United States and US territories. Credit score is a single bureau VantageScore 3.0 provided by Experian®. The monthly credit report is provided by Experian® using single bureau data. For users under the age of 18 or those without a credit history, credit score is not included. Family organizers will not have the ability to onboard, view, and receive alerts related to family member credit monitoring. Your device's primary display language must be set to English.
  4. [4]
    Privacy protection (VPN) is available on Android devices in the United States and US territories. Privacy protection is coming soon to Windows. Some streaming services are excluded. After 10 GB per month, data transfer speeds may be limited.
  5. [5]
    The identity theft insurance is underwritten and administered by American Bankers Insurance Company of Florida, an Assurant company. Please refer to the actual policies for terms, conditions, and exclusions of coverage. Coverage may not be available in all jurisdictions. Review the Summary of Benefits.
  6. [6]
    Microsoft 365 Copilot may not be available for all markets and languages. To purchase, customers must have a qualifying plan for enterprise or business.

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