The Fin The AI-fuelled fraud that deceived Australia's biggest bank
Apr 1, 2026
Joyce Moullakis, an AFR banking reporter who covers regulatory and mortgage scandals, and Angira Bharadwaj, an AFR investigative financial journalist, dive into how a billion-dollar mortgage fraud unfolded. They explore fake payslips and shell companies, AI-generated documents, the widening impact across major banks, possible money laundering and property seizure, and who might be orchestrating the scheme.
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Staff Exodus Triggered Deeper CBA Investigation
- Angira traced the story from staff turnover in CBA's home loans unit to a larger fraud probe.
- About 20 staff left, including the long-tenured head, which triggered reporting and further tip-driven investigation.
Referrer Program Created A Fraud Vector
- Joyce explained the referrer program exposed banks to risk by paying small commissions for introductions from non-broker professionals.
- CBA tightened rules to only accept referrer leads tied to existing bank customers with six-month history.
Whistleblowers Raised Early Alarm About Fake Documents
- Reporters obtained internal whistleblower complaints showing staff flagged fake documents used to secure loans.
- Complaints received in February and September raised concerns about fake documents, though not directly the billion-dollar case.