National Australia Bank to stress-test security of its agentic AI platform

National Australia Bank is preparing to test the security and operational guardrails of an agentic AI platform, a move that puts one of Australia’s largest financial institutions at the forefront of a question every bank will eventually have to answer: what happens when your AI can make decisions without a human in the loop? NAB’s AI build-out has been aggressive In April 2026, the bank launched its first dedicated AI Science team, led by George Mathews, with a mandate to design and evaluate agentic AI systems that can operate safely inside one of the most heavily regulated industries on earth. The team’s focus isn’t abstract research. It’s building the frameworks, evaluation methods, and architecture patterns that determine whether an AI agent gets deployed or shelved. NAB has already deployed OpenAI-based agents for document processing, and the results have been hard to ignore. The bank processes roughly 15,000 trust deeds annually, a task that used to take about 45 minutes per deed for human reviewers. The AI agents cut that to approximately 1 minute, a 97% reduction in review time. Across the broader organization, NAB has standardized AI tooling for roughly 6,000 developers and...