What is Encryption in Microsoft 365?

Encryption in Microsoft 365 is a security feature that protects emails, files, and data by converting information into an unreadable format. Only authorized users with the correct decryption key can access the content, ensuring confidentiality and compliance.

Types of Encryption in Microsoft 365

• Microsoft Purview Message Encryption (OME)
  • Encrypts emails sent internally or externally.
  • Users can open encrypted emails with a one-time passcode or via authentication.
• BitLocker Encryption
  • Protects data on physical devices by encrypting entire hard drives.
• Azure Information Protection (AIP)
  • Uses Sensitivity Labels to classify and encrypt documents and emails.
• TLS (Transport Layer Security)
  • Ensures emails are securely transmitted between mail servers.

Why Encryption Matters

1. Data Security: Protects sensitive emails, documents, and stored data from unauthorized access.
2. Compliance: Helps organizations meet security standards like GDPR, HIPAA, and ISO 27001.
3. Secure Collaboration: Enables secure sharing of confidential information inside and outside the organization.

How to Encrypt an Email in Outlook

• Click Options → Encrypt before sending an email.
• Use PowerShell to enforce encryption policies:

Set-IRMConfiguration -InternalLicensingEnabled $true

Best Practices for Using Encryption

• Enable Sensitivity Labels: Automatically encrypt sensitive files and emails.
• Enforce TLS Policies: Ensure secure email transmission.
• Educate Users: Train employees on when and how to use encryption.

Encryption in Microsoft 365 ensures that your organization's sensitive information remains secure, protecting against data breaches and unauthorized access. ��

Explore More

• How Microsoft 365 Uses Email Encryption