FBI warns of sophisticated impersonation fraud costing $1.6B, nearly undetectable

The FBI has issued a warning about a new fraud scheme where criminals spoof official federal agency phone numbers and impersonate agents to deceive victims into transferring money. The scheme has already cost $1.6 billion and is described as nearly impossible to detect, indicating a significant escalation in social engineering tactics. The warning highlights a growing threat to individuals and potentially businesses, though specific details on the method and affected regions remain limited.