It is unlikely any of the indicted Russians will ever face trial, as they are not on U.S. soil.
In some of the strongest language aimed at Moscow since the Cold War, Britain said Russian Federation had become a "pariah state".
British sources said the GRU was also behind BadRabbit ransomware that caused disruptions on the Kiev metro.
Several countries gave detailed information of how Russia's GRU military intelligence agency has allegedly been trying to disrupt global organisations.
Russian Federation denied what its Foreign Ministry spokeswoman called a "diabolical perfume cocktail" of allegations dreamt up by someone with a "rich imagination".
The attack targeted the headquarters of the OPCW in Hague, the global body analysing samples of the Novichok nerve agent that Britain accused Russian Federation of using to try to murder former spy Sergei Skripal and his daughter.
The United States indicted seven suspected Russian agents for conspiring to hack computers and steal data to delegitimise worldwide anti-doping organisations and punish officials who had revealed a Russian state-sponsored athlete doping programme. Other targets include Westinghouse Electric Corp., a nuclear power company, the Organization for the Prohibition of Chemical Weapons and a Swiss lab.
While the latest case did not arise from Robert Mueller's probe into Russian election meddling, it overlaps with it.
Public Safety Minister Ralph Goodale said Thursday the "behaviour of the Russians.is absolutely unacceptable".
"Where Russia acts in an indiscriminate and reckless way, where they have done in terms of these cyberattacks, we will be exposing them", Williamson told reporters in Brussels at talks with U.S. Defense Secretary Jim Mattis and their North Atlantic Treaty Organisation counterparts.
The NCSC also said, with high confidence, that the Kremlin was also responsible for hacking the Democratic National Committee (DNC) in 2016, which also affected the USA presidential election of the same year.
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No Republicans have said they will vote against Kavanaugh, although four have not committed to supporting him. They include three people who Ford says were in the house at the time of the party.
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Russian officials portrayed the allegations as part of an anti-Russian campaign meant to entrench Moscow's reputation as an enemy.
Russia scathingly accused the West of "spy mania", with the Russian foreign office describing the accusations as "propaganda directed against our country".
The Dutch defense minister on Thursday accused Russia's military intelligence unit of attempted cybercrimes targeting the global chemical weapons watchdog and the investigation into the 2014 Malaysian Airlines crash over Ukraine. GRU operatives are also said to be behind the attempted hacking of the World Anti-Doping Agency in Switzerland past year. Instead, they were expelled to Russian Federation.
But British government sources said the NCSC has assessed with "high confidence" that the GRU was "almost certainly" behind the DNC hack that some Hillary Clinton supporters claimed helped tip the United States election in Donald Trump's favour.
Relations between Russia and the United Kingdom seriously deteriorated after Britain accused the Kremlin of poisoning former Russian agent Sergei Skripal and his daughter Yulia in Salisbury in March of this year. Russian Federation says the two men were sightseers who visited Skripal's home town twice.
Skripal and his daughter were poisoned with the Soviet-made nerve agent Novichok.
After the Skripal poisoning, dozens of Western countries launched the biggest expulsion of Russian spies working under diplomatic cover since the height of the Cold War.
The GRU was also accused of trying to hack the investigation into the 2014 downing of a Malaysian Airlines flight over eastern Ukraine.
The Netherlands expelled four "Russian agents" after the attempt and said the operation was carried out by Russia's GRU military intelligence agency, officials said..
As well as the World Anti-Doping Agency, GRU undermined transport systems in Ukraine and democratic elections, such as the 2016 U.S. presidential race, according to the NCSC.
Seven members of the Russian Main Intelligence Directorate (GRU) have been charged for stealing and disseminating the personal information of anti-doping officials and 250 athletes following the 2014 Sochi Olympics, The Verge reported.
The NCSC has blamed the GRU for attacks such as the 2017 WADA email leak, which saw the identities of 28 football players who had received a Therapeutic Use Exemptions (TUEs) released online.