Ronan Farrow has published an investigation into a software called Pegasus and its maker, NSO Group. Pegasus is one of the most invasive spywares known; it allows users—including law-enforcement officials or government authorities—to hack into a target’s smartphone, gaining access to photos, messages, and the feeds from a camera or microphone. NSO markets Pegasus as a tool to catch terrorists and other violent criminals, but once a surveillance tool is on the market it can be very difficult to control. Farrow finds that Pegasus is being used to suppress political opposition in democratic nations, including Spain. The largest known cluster of Pegasus attacks has targeted people in Catalonia who support the independence movement, which the Spanish government views as a threat. “This is not just an information-gathering tool,” Farrow tells David Remnick; “It’s an intimidation tactic, and it works.”