Office 365 Security Best Practices - You MUST Enable. Stop Data Leaks, MFA Bypass & Guest Risks

Office 365 Security security best practices for securing your azure tenant. Want to lock down your Microsoft 365 tenant and stop data breaches before they happen? In this video, I cover the essential Office 365 security best practices you need to implement in 2025 and beyond to secure your users, admins, and data. 🔐 In this video, you'll learn how to: 0:16 Setup Multi-Factor Authentication (MFA) using Conditional Access Policy 3:50 Disable legacy authentication protocols 5:56 Protect Azure Global Admin accounts 7:34 Monitor Entra ID sign-ins and detect suspicious logins 13:56 Configure SPF, DKIM & DMARC to prevent email spoofing 16:08 Leverage Microsoft Purview for data loss prevention & compliance 19:24 Run Microsoft Secure Score assessments and harden your tenant 23:49 Use Conditional Access Policies to enforce zero trust 27:55 Control SharePoint external sharing and guest access 💡 Whether you're an IT admin, MSP, or business owner, these tips will help you prevent account compromise, data leaks, and ransomware attacks across Microsoft 365. Follow our blog post on Office 365 Security Best Practices (Meet CIS & NIST Compliance): https://infrasos.com/office-365-security-best-practices-meet-cis-nist-compliance/ Try InfraSOS Office 365 Reporting & Auditing Solution: https://infrasos.com/office-365-reporting/ Try Cloud Security Assessment Tool using Prowler on Azure https://azuremarketplace.microsoft.com/en-us/marketplace/apps/cloud-infrastructure-services.prowler-ubuntu