The Kremlin said on Thursday its FSB domestic spy service was not involved in any unlawful cyber activity, a day after the United States charged two Russian intelligence agents and two others with hacking 500 million Yahoo accounts.
Kremlin spokesman Dmitry Peskov said Russia had received no official information about the charges and had gleaned all it knew about the case from media reports.
He told reporters on a conference call Moscow hoped to receive official information.
"We have said repeatedly that there can be no discussion of any official involvement of any Russian office, including the FSB (Federal Security Service), being involved in any unlawful cyber activities," said Peskov.
The United States on Wednesday charged two Russian intelligence agents and two criminal hackers with masterminding the 2014 theft of 500 million Yahoo accounts, marking the first time the U.S. government has criminally charged Russian spies for cyber offences.
The charges came amid a swirl of controversies relating to alleged Kremlin-backed hacking of the 2016 U.S. presidential election and possible links between Russian figures and associates of U.S. President Donald Trump, and uncertainty about whether Trump is willing to respond forcefully to aggression from Moscow in cyberspace and elsewhere.