Kalshi has issued its first-ever lifetime ban to former U.S. Rep. George Santos after concluding he failed to fully cooperate with an insider-trading investigation. He is also being fined $71,356, according to a filing (PDF) on its website. Engadget reports: It was reported in June that Santos was under investigation from the Department of Justice (DOJ) and the Commodity Futures Trading Commission (CFTC) over insider trading. Prediction markets like Kalshi allow users to buy contracts or shares in the outcome of events. Participants don't necessarily have to wait for an event to resolve before selling these contracts and cashing in. Santos allegedly bought contracts on Kalshi indicating that he would not attend this year's State of the Union speech after weather disrupted his travel plans. According to the CFTC, Santos then sold those contracts for a profit after claiming on social media that he would be in attendance. The former congressman is said to have made more than $17,500 through this scheme, which Kalshi reportedly detected and flagged to authorities. In July, Santos agreed to pay over $35,000 to settle the CFTC's claims against him. The agency also issued him a three-year trading ban. Kalshi, however, doesn't plan to allow Santos back on its platform in 2029 (or anytime after that). The company confirmed to The Wall Street Journal this was the first time it had given anyone a lifetime ban and that it did so because Santos didn't fully cooperate with its investigation. He can appeal the decision to the CTFC.

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Bank of England Governor Andrew Bailey is warning that advanced "frontier" AI models could materially increase cyber risk across the global financial system by making attacks faster, cheaper, and more scalable. In a letter to G20 finance officials, he said financial firms need stronger defenses and contingency plans for simultaneous disruptions. CNBC reports: Writing in his capacity as chair of the Financial Stability Board, an international body that coordinates policy and makes recommendations to national authorities, Bailey identified the potential impact of frontier AI -- which refers to the most advanced AI models -- on cyber risk as "the most immediate concern" for the financial system. "Frontier AI may have the ability materially to alter the speed, scale and economics of cyber risk, which could undermine market confidence system-wide, especially due to highly concentrated third-party service providers," Bailey said. "Recent developments have also highlighted to me that many jurisdictions do not have the protocols in place to manage the development, release, and deployment of advanced frontier AI models, heightening risks for the financial sector and beyond," he added. [...] Financial institutions and technology providers will need to improve vulnerability management, response and recovery capabilities -- "and prepare for more severe scenarios involving simultaneous disruption across multiple firms or shared technology dependencies," Bailey said. Alongside new AI models, Bailey cited "fragilities" in sovereign debt markets, the growing use of debt by investors in equity markets and stretched asset valuations, particularly AI-related investments, as among his concerns.

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