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Microsoft 365 security checklist for SMEs before phishing hits

A practical checklist to harden Microsoft 365 in an SME: MFA, permissions, mailbox rules, shared links and basic alerts.

Blurtek
3 min read56 palabras
01

Why Microsoft 365 is often the real first line

For many SMEs, email, documents and identity live in Microsoft 365. If an attacker gets a valid account, they can read conversations, forward invoices, create hidden mailbox rules and abuse company trust.

  • MFA for all critical accounts
  • Separate admin accounts
  • Review mailbox forwarding rules
  • Control anonymous OneDrive and SharePoint links
  • Disable unused accounts
  • Alert on unusual sign-ins

MFA helps, but it does not replace permission governance, inactive account cleanup and file sharing control. The review should be short, monthly and evidence-based.

At Blurtek we review your case and design a safe, measurable implementation without hype. If you want to prioritise the next step, let’s talk.

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Microsoft 365 security checklist for SMEs before phishing hits | Blurtek