The bank has stated that the exposure occurred due to an unauthorized access to its systems. The affected keys were used to make payments and receive funds through the PIX instant payment system. The bank has taken immediate action to contain the situation and prevent further unauthorized access. Affected customers have been notified and advised to change their PIX keys as a precautionary measure. The bank is working closely with law enforcement to investigate the incident and identify the responsible parties. The Central Bank of Brazil emphasizes that the PIX system remains secure and reliable. Customers are encouraged to use the system with confidence, while taking appropriate precautions to protect their financial information.