The UK’s “Online Safety Bill” is on Parliament’s agenda as members return next week. Supporters promise it would make Britain the safest place in the world to be online, protecting especially kids from harmful content. But while acknowledging its intent, U.S. tech executives say it deals a major blow to privacy. Meredith Whittaker, president of the nonprofit encrypted messaging app Signal, is an outspoken critic. She’s concerned by a clause that lets British regulators mandate that citizens install surveillance software.