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Security7 min read

Microsoft 365 Security Mistakes to Fix Today

MFA isn't enough. These are the most common Microsoft 365 misconfigurations I find on day one of an audit — and how to fix them this week.

Microsoft 365 Security Mistakes to Fix Today

Almost every audit I run uncovers the same handful of issues. The good news: most can be fixed in an afternoon.

The usual suspects

  • Legacy authentication still enabled.
  • No conditional access policies.
  • Global admins without MFA hardware keys.
  • Shared mailboxes with sign-in enabled.
  • Anonymous link sharing left wide open in SharePoint.

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