A London man used GPT chat to make a £154m takeover bid for oil and gas company Touchstone Exploration to make a £70,000 rise in its share price.
To carry out the plan, 44-year-old Christopher Walcott created fictitious characters, forged documents on behalf of HSBC using a neural network, and even held personal meetings with the company's CEO in Mayfair, London, imitating an American accent.
Touchstone's management suspected something was wrong due to errors in the papers and forwarded the data to the British Financial Conduct Authority (FCA).
The regulator tracked the fraudster using SIM cards, CCTV recordings and transactions on the parking app.
The court found Walcott guilty and sentenced him to two years of probation and 200 hours of community service.