Security for your small or medium-sized business

Work securely from anywhere with comprehensive, cost-effective and easy-to-use solutions, especially designed for businesses with up to 300 employees.

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Security is critical for your business

Businesses are experiencing an increase in both the volume and sophistication of cyberattacks. With rapid technology adoption and increased hybrid work, the risk is greater for small and medium-sized customers contending with budget constraints and gaps in specialized security skills. Microsoft offers comprehensive solutions to address this evolving threat landscape.


Increase in ransomware attacks

Ransomware is a common threat for small businesses, which make up one-half to three-quarters of the victims. Overall ransomware attacks are up almost 300% in the past year.1


Experienced a security breach

Twenty-three percent of small and medium-sized customers say they had a security breach in the last year.2 Stay online by adopting comprehensive security with automation to rapidly detect and respond to threats.


Average cost to businesses

It’s estimated that the average cost of a data breach to a business is USD108,000.3 You don’t need to compromise just because you’re a small business—security that keeps you productive is a critical investment.

Comprehensive security products for your business

Modernize your business security, and upgrade from traditional antivirus software to enterprise-grade security for your apps, identity, data, and devices. Microsoft offers easy-to-use standalone products and full-featured packages to help keep you secure and save you time, freeing you up to focus on what matters most: running your business.

Best value

Microsoft Defender for Business

Microsoft Defender for Business $3.00


(Includes up to five devices per user; annual subscription—auto renews)

An easy-to-use standalone product that includes:

  • Up to 300 users
  • Enterprise-grade protection across your devices and operating systems
  • Threat and vulnerability management
  • Next-generation antivirus protection
  • Endpoint detection and response
  • Automated investigation and response
  • Up to five devices per user

Microsoft 365 Business Premium

Microsoft 365 Business Premium $22.00


(Annual subscription—auto renews)

A full-featured package that saves time and helps keep you secure, Microsoft 365 Business Premium includes Defender for Business, plus:

  • Defender for Office 365 to help protect email from phishing attacks
  • The ability to secure work data on personal devices with Microsoft Intune
  • The ability to secure access to work apps with Azure AD Premium Plan 1
  • Protection against lost or stolen passwords with advanced multi-factormultifactor authentication
  • Data protection with Azure Information Protection and data loss prevention
  • Archiving, e-discovery, and legal hold
  • Best-in-class Office apps and powerful cloud services
  • Microsoft Teams to empower collaboration via chat and online meetings
  • 1 TB of cloud storage per user on OneDrive

Add endpoint protection for your Windows and Linux servers

Microsoft Defender for Business servers

new price $3.00 user/month

(Annual subscription—auto renews)

Add endpoint protection for your Windows and Linux servers with the Defender for Business servers add-on.*


Defender for Business servers add-on delivers:

  • Enterprise-grade endpoint security for servers within a single admin experience inside Defender for Business, helping you to protect all your endpoints in one location.
  • Simplified onboarding and management, with security policies activated out of the box to help quickly secure servers.
  • Identification of threats and vulnerabilities so you can patch and protect your environment from threats such as ransomware and malware.

 *Requires Defender for Business or Microsoft 365 Business Premium.

Small and medium business customers have resource and budget constraints and often don’t have the specialists to help them deal with attacks. Yet they need to be able to fortify their security just as much as large organizations.

—Vasu Jakkal, Corporate Vice President, Security, Compliance & Identity, Microsoft

Trends and tips

Two people having a conversation over a tablet.

10 easy rules to help secure your data and protect your devices

Educate your organization on 10 ways to avoid identity theft and keep your business email, accounts, and devices safer.

A person wearing headphones looking at a desktop monitor.

Help secure your business with comprehensive protection from Microsoft Security

Many small and medium-sized businesses aren’t well-equipped to maintain cybersecurity hygiene. Find out how Microsoft can bring enterprise-grade security to businesses with up to 300 employees.

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Small-business resources and training

Get insights into the unique challenges of keeping a small business secure, and learn how to help protect your customer and employee data from cyberattacks.

Industry recognition

Defender for Business is built on the foundation of Microsoft Defender for Endpoint and features many of the same capabilities.

Resources to learn more, get support, and stay informed

Documentation and how-to resources

Explore technical documentation to help you secure your business.

Tech community

Discuss best practices, news, and the latest trends and topics related to Microsoft’s offerings for small business customers.

Microsoft community

Post questions, follow discussions, and share your knowledge with the Microsoft community.

Get support

Find the assistance you need with your Microsoft business product.

Resources for your security partner

Explore playbooks, webinars, and resources for partners serving small and medium-sized businesses, and help improve security outcomes for your customers at scale. Find benefits and opportunities for Defender for Business or a broad range of materials focused on Microsoft 365 Business Premium.

Get started and help secure your business

Microsoft provides versatile, cost-effective, enterprise-grade protection that’s easy to set up and maintain. Take critical steps to secure your small or medium-sized business today.

  1. ABC News, DHS secretary warns ransomware attacks on the rise, targets include small businesses, May 6, 2021.
  2. Microsoft research: Security in the New Working Environment, 2022.
  3. Kaspersky, IT security economics in 2019.
  4. IDC, The IDC MarketScape: Worldwide Modern Endpoint Security for Small and Midsize Businesses 2021 Vendor Assessment, Doc #48304721. November 2021.
  5. Forrester and Forrester Wave are trademarks of Forrester Research, Inc.
  6. The Forrester Wave™: Endpoint Detection and Response Providers, Q2 2022, Allie Mellen, April 2022.