Commonwealth Bank of Australia (CBA) has developed a new artificial intelligence agent as talk of AI-generated mortgage fraud continues to dominate Australia's mortgage market.
For brokers, lenders and compliance teams, the move signals a rapidly escalating reality: fraud is now being shaped by the same technology being used to stop it.
Australia's largest bank said on Friday that it has introduced a new AI system designed to detect emerging fraud and scam patterns in real time. The system operates across a number of datasets, monitoring more than 80 million signals daily from transactions, card payments and digital banking activity.
"This technology allows us to identify unusual events in highly-complex patterns of activity at far greater speed and scale, helping us detect emerging threats sooner and update our controls faster,” said CBA's Executive General Manager of Fraud and Scams James Roberts.
The executive added that the updated AI operates 24/7, constantly scanning for unusual or potentially fraudulent activity.
"When suspicious patterns are identified, the system quickly assesses their severity, analyses context and proposes new detection rules to help intercept them," Roberts explained. "The new agent goes beyond traditional AI by not only rapidly identifying new threats but also determining how it can seek to disrupt them."
CBA’s latest AI technology arrives as concerns about mortgage fraud continue to escalate.
Recent reports suggest mortgage fraud has become a multi-billion-dollar problem in Australia’s lending landscape, with CBA being one of lenders to report fraudulent loan activity. The fraud involves borrowers allegedly falsifying or altering income documents (increasingly with the help of AI) to secure loans they would not otherwise qualify for.
"AI isn’t the problem," Blake Buchanan, general manager at aggregator group Specialist Finance Group (SFG), told Australian Broker. "Rather, the people who use it for nefarious reasons are."
But regardless of where the blame lies, scams are evolving quickly — from impersonation tactics to altered and falsified documents — and the cost is rising, in more ways than just financial.
Authorities are already making arrests as Australia’s mortgage fraud crackdown gathers pace. In a recent development reported by Australian Broker’s sister publication MPA, mortgage aggregator Finsure terminated its contract with Hai Money, a brokerage operating as a sub-aggregator under Finsure, amid ongoing investigations into alleged home loan fraud.
CBA said the new AI agent sits within its existing fraud infrastructure. The bank said it already processes more than 20 million payments a day and uses machine learning systems to generate tens of thousands of proactive customer alerts daily. The new layer adds additional capability to help identify emerging fraud and scam patterns faster.
Features of the agent include:
But the rise of AI-generated fraud is not just a banking issue. It is increasingly embedded in the origination process, making fraudulent applications harder for mortgage brokers to distinguish from legitimate ones.
