Learn about security for Microsoft 365 products and services.

Microsoft Defender for Office 365 is powerful email security software with phishing protection, secure collaboration tools, and advanced collaboration security.

This guide breaks down Microsoft 365 (M365) security across four key areas: capabilities, best practices, features, and assessment methodology.

For Microsoft 365 customers, one wrong click – an over-permissioned guest, a forgotten admin role, a disabled conditional access policy – can open your entire tenant. Gartner found that …

Apr 15, 2025 · We're going to walk you through five key strategies to boost security and compliance in Microsoft 365 while highlighting the tools, automation, and best practices …

2 days ago · Microsoft will enable Teams messaging security by default in January 2026, blocking risky files and malicious links to protect against AI-driven threats.

Mar 17, 2025 · Microsoft 365 endorses security ideas like Zero Trust, and principles of Least Privilege access. This section gives an overview of fundamental elements that form a security …

Dec 19, 2025 · After you finish setting up your Microsoft 365 for business organization, you need to review and configure the security settings. You can organize the security settings in …

3 days ago · "We're improving messaging security in Microsoft Teams by enabling key safety protections by default," Microsoft informed administrators in a Microsoft 365 message center …

Sep 9, 2025 · Learn best practices to protect your data using Microsoft 365 Business Basic, Standard, or Premium. Protect devices, email, files, and accounts.