Russian cyber operatives have attacked Britain's media, telecommunications and energy sectors over the past year, according to prepared remarks by the head of the government's main cyber defense agency.
Ciaran Martin, chief executive of the National Cyber Security Centre (NCSC), declined to provide any details on the attacks in a speech scheduled for Wednesday in London.
The remarks follow comments on Monday from Prime Minister Theresa May in which she accused Russia of spreading disinformation and meddling in elections, echoing a heated debate in the United States over alleged Russian interference in the 2016 presidential election.
Russian has strongly denied any election interference in the United States. The Russian embassy in Washington did not immediately respond when asked after normal business hours for comment on Martin's remarks.