The incident occurred due to a technical issue that allowed unauthorized access to the data. The affected information includes the full name, CPF (taxpayer identification number), email address, and phone number associated with the PIX keys. The Central Bank has emphasized that no financial or transaction data was compromised. The bank has taken immediate steps to address the issue and has notified the affected individuals. They have also implemented additional security measures to prevent similar incidents in the future. The Central Bank has advised users to remain vigilant and report any suspicious activity related to their PIX accounts. They have also recommended that users update their passwords and enable two-factor authentication for added security.