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Security guide · Microsoft 365 · Cybersecurity

Microsoft 365 Security Guide for Small Business

Answers: How secure is Microsoft 365 for business

Baseline controls

  • Enforce MFA for all users—especially administrators
  • Use conditional access for risky sign-ins and legacy auth blocks
  • Limit Global Administrator roles; use privileged access workflows
  • Enable modern anti-phishing and safe attachments/links
  • Maintain third-party backup independent of Microsoft native retention

What businesses often miss

Shared mailboxes, guest accounts, and unsanctioned OAuth apps create blind spots. Regular access reviews and sign-in log monitoring close gaps insurers ask about.

K.E.T. Networks provides both managed IT and MSSP services for organizations in Snohomish County and Northern King County, Washington.

Questions this guide answers

  • No. Microsoft operates the platform; you are responsible for data protection strategy. Most cyber-insurance and compliance programs expect independent backup and restore testing for email and SharePoint data.

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