The U.S. Department of Justice charged a Google software engineer over alleged insider trading on Polymarket that prosecutors said generated about $1.2 million in illicit profits. Authorities alleged he obtained confidential search data from Google and used nonpublic information to place trades on the prediction market. The Commodity Futures Trading Commission also filed a civil lawsuit, and Google suspended the employee. The case adds to broader scrutiny of prediction markets, including concerns around market integrity, misuse of internal data, and regulatory oversight.