The United States is stepping up digital incursions into Russia’s electric power grid in a warning to President Vladimir V. Putin and a demonstration of how the Trump administration is using new authorities to deploy cybertools more aggressively, current and former government officials said.
In interviews over the past three months, the officials described the previously unreported deployment of American computer code inside Russia’s grid and other targets as a classified companion to more publicly discussed action directed at Moscow’s disinformation and hacking units around the 2018 midterm elections.
But the action inside the Russian electric grid appears to have been conducted under little-noticed new legal authorities, slipped into the military authorization bill passed by Congress last summer. The measure approved the routine conduct of “clandestine military activity” in cyberspace, to “deter, safeguard or defend against attacks or malicious cyberactivities against the United States.”
