Polymarket has tightened its rules to address growing scrutiny over manipulation and insider trading risks. The company now enforces stricter market design, clearer resolution criteria, and enhanced monitoring to detect suspicious activity. It will also limit certain market types, including those deemed easily manipulable. Recent actions include banning users threatening a journalist to alter an Iran missile report. These moves come as regulators push back on prediction markets and ethical concerns intensify. 
Major League Baseball signed a deal with Polymarket to bolster integrity protections. Despite challenges, Polymarket raised $200 million and seeks a $10 billion valuation. Ethical concerns have grown, with a small group generating $1 million by betting on US strikes on Iran.
