By Anat Goldstein and Farook Sattar
A finance worker at a multinational firm received what appeared to be a legitimate call from someone claiming to be the company’s CFO. The person receiving the call ended up transferring $25 million. The reality: The CFO’s voice was AI generated. The CFO never made that call.
That incident is no longer an outlier. Voice fraud in banking increased by roughly 30 percent in 2025, with AI-powered synthetic voices capable of fooling even experienced professionals. Synthetic voice attacks against financial institutions rose sharply in 2024, increasing by a factor of approximately 20 compared to the prior year, as data from the same period indicated that roughly one in 750 banking calls was flagged as potentially fraudulent.
Commercial AI voice-cloning tools have significantly reduced the barrier to entry for attackers. As synthetic voice technology becomes…
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Trust your gut feeling—if a transaction or a conversation feels pressured, overly emotional, or “off,” stop all communication immediately and seek a second opinion from a trusted friend or professional.