The UK formally accused the Russian military of orchestrating and launching the NotPetya ransomware outbreak, media reports.
"The UK Government judges that the Russian Government, specifically the Russian military, was responsible for the destructive NotPetya cyber-attack of June 2017," said Foreign Office Minister Lord Ahmad in a statement.
"The attack showed a continued disregard for Ukrainian sovereignty. Its reckless release disrupted organisations across Europe costing hundreds of millions of pounds," Lord Ahmad added.
"The Kremlin has positioned Russia in direct opposition to the West yet it doesn’t have to be that way," Lord Ahmad also said. "We call upon Russia to be the responsible member of the international community it claims to be rather then secretly trying to undermine it."