Sony Bank Says Securitize Japan Breach Exposed Data of 621 Customers

Sony Bank said an unauthorized access incident at Securitize Japan, an external contractor for its digital securities business, exposed information belonging to 621 customers. According to Foresight News, the exposed data included the names, addresses, dates of birth, and account numbers of four customers, as well as the names of another 617 customers. Sony Bank said it has found no improper transactions related to the incident and no evidence that the exposed information was published or circulated online. The incident was limited to digital securities services, and related transactions have been suspended until further notice. Securitize Japan detected an anomaly in its systems on October 29 and confirmed unauthorized external access that day, then notified Sony Bank. An investigation of system logs confirmed the data exposure. Sony Bank said it will contact affected customers individually.