While I have not seen evidence that Mythos (or GPT-5.5 Cyber) are revolutionary, there is no denying that these models are getting smarter, better at using tools and chaining various lower severity exploits to gain access, persistence and do some serious damage. And yes, Anthropic and OpenAI are trying to prevent malicious use of their models, but two things are certain:
- They don't always succeed
- Other (less scrutinised) labs are not far behind
So ASIC's recommendations are good for financial institutions and everyone else just the same:
- First: identify and protect critical assets and systems. Know what matters most to your business and customers.
- Second: patch vulnerabilities quickly and strengthen patch management processes so you aren't left exposed.
- Third: be ready to respond. Maintain and test your incident response plans and playbooks.
Hope for the best, prepare for the worst.