This eBook explores the evolving email threat landscape and why legacy defenses are no longer sufficient. It explains how phishing, ransomware, and supplier compromise bypass native email security, especially in Microsoft 365 environments. The guide outlines Proofpoint’s people-centric approach, combining AI-driven detection, account takeover protection, and insider threat visibility. It also emphasizes integration with broader compliance and data protection needs. With practical recommendations, the guide helps organizations strengthen resilience against modern, multi-vector attacks by safeguarding both email as a channel and users as the new security perimeter.

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