A Sussex-based businessman has pursued reimbursement for unauthorized transactions totaling £14,244 that occurred after criminals gained access to his debit card details linked to his Anthropic Claude account. The fraud unfolded over several days in June after Metro Bank identified a suspicious transaction and contacted the customer, who confirmed it was unauthorized. Despite the customer’s denial, the bank’s systems allowed additional fraudulent charges ranging from £90 to £200 to proceed through its systems before being blocked completely.
The incident reflects a broader pattern of security concerns surrounding Claude. Earlier in the year, multiple users reported unauthorized charges related to the AI platform, with some describing fraudulent gift card purchases made with their financial information. Additionally, it was recently disclosed that certain user conversations with Claude had been exposed publicly online. The platform has nonetheless gained official endorsement, with the Financial Conduct Authority indicating that Anthropic would provide access to Claude for firms participating in a regulatory sandbox program designed to facilitate safe experimentation with advanced artificial intelligence technologies.
Metro Bank acknowledged the complexity of the fraud situation and stated that payment processing delays resulted in multiple unauthorized transactions completing before full card suspension occurred. The bank offered £300 in compensation and confirmed implementation of measures to expedite future card blocking procedures. Anthropic has attributed the incident to a coordinated criminal operation and stated it found no evidence that card details were compromised through its own systems. The company has banned the user responsible and indicated a commitment to refunding customers affected by fraudulent purchases through its support channels.
The customer received temporary reimbursement from Metro Bank while a chargeback dispute was initiated with Anthropic. He has since been refunded by Anthropic, though Metro Bank’s temporary credit is scheduled to be reversed. The customer has indicated plans to escalate a complaint to the Financial Ombudsman Service regarding the incident.
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