The UK has accused Russian military intelligence of four cyber attacks (Picture: Crown Copyright).
The Foreign Secretary Jeremy Hunt has said the Russian military intelligence service, the GRU, is responsible for a wave of cyber attacks around the world.
He has accused it of waging a campaign of "indiscriminate and reckless" cyber strikes targeting political institutions, businesses, media and sport.
The National Cyber Security Centre (NCSC) said that a number of hackers known to have launched attacks have now been identified as the GRU.
The NCSC associated four new attacks with the GRU. Among targets were the World Anti-Doping Agency, firms in Russia and Ukraine, the US Democratic Party and a small TV network in the UK.
Mr Hunt said: "These cyber attacks serve no legitimate national security interest, instead impacting the ability of people around the world to go about their daily lives free from interference, and even their ability to enjoy sport.
"The GRU's actions are reckless and indiscriminate: they try to undermine and interfere in elections in other countries; they are even prepared to damage Russian companies and Russian citizens."
The latest allegations will put even more strain on relations with Russia after Britain blamed Moscow for the nerve agent attack in Salisbury which targeted former Kremlin agent Sergei Skripal and his daughter Yulia.
UK authorities believe two Russian military intelligence officers were responsible for that attack.
Today's claims come as NATO defence ministers continue their meeting in Brussels. On the agenda today is cyber attacks and other hostile threats.