Bear hunt The intrusion is one of the largest cyber-espionage campaigns ever seen O N SEPTEMBER 25TH Russia’s president, Vladimir Putin, warned that a “large-scale confrontation in the digital sphere” was looming. He offered a solution. Russia and America would “exchange guarantees of non-interference in each other’s internal affairs, including electoral processes, including using ICT”—in short, a cyber-truce. Even as he spoke, his hackers were apparently deep inside some of America’s most sensitive networks. Listen to this story Enjoy more audio and podcasts oniOSorAndroid. American officials claim that a group of hackers known as APT29, or more evocatively as Cozy Bear, thought to be part of the