PT Bank Commonwealth (PTBC) / Commonwealth Bank of Australia

Commonwealth Bank of Australia, also known as PT Bank Commonwealth (PTBC), operates as a banking institution. Its primary market is Australia, where its headquarters are located, but it also maintains a presence in Indonesia through a subsidiary entity. The core function involves providing financial services, though specific product or service details beyond general banking are not elaborated in the provided context. The organisation serves customers within these geographical markets.

The bank operates with a parent-subsidiary structure, where Commonwealth Bank of Australia is the parent organisation and PT Bank Commonwealth (PTBC) functions as its Indonesian subsidiary. This structural separation was evident during a cybersecurity incident on March 1, 2023, which impacted the Indonesian subsidiary. Unauthorized access occurred on a web-based project management application used by PTBC. Throughout this incident, services provided by the Indonesian subsidiary remained operational without interruption. Importantly, the parent bank's segregated systems in Australia reported no impact from the breach. Commonwealth Bank of Australia provided support to its subsidiary during the incident response while maintaining oversight of the investigation and remediation efforts undertaken to address the security breach.