Dominic Cummings claimed Chinese cyberspies accessed classified UK systems for years, including “Strap” data The Cabinet Office and cybersecurity experts strongly denied any breach or investigation occurred Allegations sparked debate; Cummings offered to testify if Parliament launches an inquiry For “many years”, Chinese cyberspies were dwelling in UK high-level security systems, obtaining “vast amounts” of classified government information, claims Dominic Cummings, British political strategist