The tool exploited a flaw in Apple's iMessage app to enable hackers to completely take over a victim's iPhone. It was used against hundreds of targets in a vast campaign of surveillance and espionage whose victims included geopolitical rivals, dissidents, and human rights activists. MIT Technology Review can confirm the exploit was developed and sold by an American firm named Accuvant--shedding new light on the role played by American companies and mercenaries in the proliferation of powerful hacking capabilities around the world. If you love tech, be sure to get stuck into these seminal books. This Fourth of July drone show is pretty spectacular.