AI messaging scam costs Italy's top bank Intesa millions, sources say

Fraudsters using AI to impersonate senior ​executives stole €95 million ($108 million) from Fideuram, the ​private banking arm of Italy's ‌biggest lender Intesa ​Sanpaolo, two sources familiar with the matter said on Friday.

More than half the funds were later recovered, but some €36 million remains missing, ‌the sources said. The scheme, first reported by Corriere della Sera, began in February when then-Fideuram Chairman Paolo Molesini received what appeared to be a WhatsApp message from Intesa Sanpaolo CEO Carlo Messina seeking urgent ‌help with an overseas transaction.

The fraudsters followed up with a phone call that appeared to ‌come from a senior partner at a prominent law firm, confirming the instruction. According to the sources, the callers used AI technology to replicate the lawyer's voice. Believing the request was genuine, Molesini instructed his finance department to arrange ⁠a series ​of transfers to foreign accounts, ⁠mainly in China and Hong Kong, the sources said.

Intesa Sanpaolo and Fideuram declined to comment. Fideuram quickly detected irregularities ⁠in the transfers and alerted banks and authorities in several countries. Roughly €53 million was later recovered through ​cooperation between authorities in China, Portugal and Italy, according to the sources.

The remaining funds have not ⁠been traced after passing through a network of overseas accounts and being converted into cryptocurrencies, they said. Neither Molesini nor any ⁠other ​Fideuram executives are under investigation, the sources said. However, Milan prosecutors have placed a foreign national living outside Europe under investigation on suspicion of computer fraud, one of the sources said.

Molesini resigned ⁠as chairman in March citing personal reasons. At the time, Fideuram gave no further explanation for his ⁠departure. Last year, fraudsters using ⁠AI to mimic the voice of an Italian minister persuaded businessman Massimo Moratti to transfer nearly €1 million to an overseas account. The money was later ‌recovered.

($1 = 0.8772 ‌euros) (Additional reporting by Valentina Za. Writing by Crispian Balmer. ​Editing by Mark Potter)