This handbook details how business email compromise (BEC) has evolved into one of the most damaging cyber threats, costing victims billions worldwide. It outlines common tactics like CEO fraud, supplier impersonation, and payroll redirection. Real-world examples demonstrate how attackers exploit trust and weak authentication to trick employees into wiring funds or disclosing sensitive data. Proofpoint recommends layered defenses, including advanced email authentication (DMARC), AI-driven threat detection, and user awareness training. The handbook also highlights the importance of identifying Very Attacked People (VAPs) who are prime BEC targets.

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