Anthropic's newest AI tool could spark chaos in markets, but not for the reasons investors have become accustomed to lately. Loading audio narration… The AI giant — which has rolled out new tools and updates this year that have upended parts of the market — recently developed a new model aimed at improving cybersecurity. But the model risks exploiting a key vulnerability in the financial sector, introducing risks ranging from widespread identity theft to the destabilization of the financial system, the American Securities Association said. In a public letter to the Treasury Secretary on Thursday, the trade group flagged concerns…