Over the past month, President Vladimir V. Putin of Russia has received two starkly different messages about hacking into American computer networks from the current and future presidents of the United States: Don’t you dare, and don’t worry, we’re not even sure it was you.
The White House confirmed in a statement on Wednesday that eight days before the presidential election, the United States “contacted the Russian government directly regarding malicious cyberactivity” that was “targeting U.S. state election-related systems.” It sent the message over a rarely used system: a hotline connecting the Nuclear Risk Reduction Centers in both countries, which they had agreed three years ago could also be employed to deal with major cyberincidents.