APT29 was "almost certainly" linked to Russian intelligence.In a separate claim, London said "Russian actors" sought to disrupt last year's UK general election by circulating leaked trade documents between Britain and the United States.Both accusations came even before the publication in the coming days of a long-awaited British parliamentary report into alleged Russian interference in the 2016 Brexit vote.Russia quickly rejected the accusations as "groundless".The United Kingdom's National Cyber Security Centre (NCSC) and Canada's Communications Security Establishment (CSE) said Thursday that APT29 was "a cyber espionage group, almost certainly part of the Russian intelligence services," adding their the assessment was endorsed by their US.