Here are the top Microsoft 365 security features you should implement right now to protect your business data, devices, and users.
1. Multi-Factor Authentication (MFA) – Your First Line of Defense
Passwords alone aren’t enough. MFA adds an extra layer of security by requiring users to verify their identity using a second factor—like a mobile app or text message. Enabling MFA drastically reduces the risk of unauthorized access, even if passwords are compromised.
➡ Action: Ensure MFA is turned on for all accounts, especially administrators.
2. Protect Your Administrator Accounts
Admin accounts have the highest level of access in your Microsoft 365 environment, making them prime targets for hackers. Securing these accounts with strict policies is essential.
➡ Action: Use dedicated admin accounts separate from everyday user accounts, enable MFA, and limit the number of users with admin privileges.
3. Anti-Phishing, Anti-Spam, and Anti-Malware Protection
Email is one of the most common attack vectors. Microsoft 365 offers built-in protection against phishing, malware, and spam, but configuring these settings correctly is key.
➡ Action: Apply preset security policies to filter out phishing attempts and malicious attachments before they reach users. If you’re using Microsoft 365 Business Premium, leverage advanced features like Safe Links and Safe Attachments for added protection.
4. Endpoint Protection – Secure Every Device
Your employees use multiple devices—laptops, tablets, and smartphones—to access company data. Every endpoint is a potential entry point for cyber threats. Microsoft 365 Business Premium includes advanced endpoint security features to protect these devices.
➡ Action: Enable device security policies and ensure all company and personal devices meet security standards before accessing business data.
5. Data Loss Prevention (DLP) – Keep Sensitive Data Safe
Accidentally sending sensitive files to the wrong recipient can have serious consequences. Data Loss Prevention (DLP) helps prevent this by setting rules that automatically block or warn users before sharing confidential information.
➡ Action: Configure DLP policies to protect sensitive business data across email, SharePoint, OneDrive, and Teams.
6. Secure File Sharing in SharePoint & OneDrive
Collaboration is key for SMBs, but without proper security settings, file sharing can expose your business to risks. Microsoft 365 lets you control who can access and share your files.
➡ Action: Set up sensitivity labels to classify files as confidential, internal use only, or public, and restrict access accordingly. Use Safe Links & Safe Attachments for added protection.
7. Microsoft Teams Security Features
Teams is a powerful collaboration tool, but it also needs protection. Microsoft 365 Business Premium includes security features to prevent data leaks within Teams.
➡ Action: Use Sensitivity Labels to classify and protect meeting content, and enable Data Loss Prevention (DLP) to restrict sharing of sensitive information.
8. Microsoft Defender for Endpoint
Microsoft Defender for Endpoint is an advanced endpoint protection platform that offers threat detection utilizing machine learning and behavioral analysis to detect and thwart sophisticated threats.
➡ Action: By combining Microsoft Defender's advanced capabilities with the expertise and 24/7 monitoring, analysis and response of a SOC, your organization can achieve a more robust and comprehensive security posture.
9. Maintain and Monitor Your Security Settings
Cybersecurity isn’t a one-time task—it requires ongoing monitoring and maintenance. Regularly reviewing your security settings ensures your business remains protected against new threats.
➡ Action: Perform monthly security audits, review user access, and update policies based on the latest threats.
Conclusion
Need Help? Present Can Secure Your Microsoft 365 Environment. Managing IT security can be complex, but you don’t have to do it alone. At Present, we specialize in securing Microsoft 365 environments for SMBs. Whether you need a security assessment, policy configuration, or ongoing support, we’re here to help.
Get in touch with us today to ensure your business is protected against cyber threats.