China Accessed Classified UK Systems for a Decade, Officials Say

Chinese state actors systemically and successfully compromised classified UK government computer systems for more than a decade, according to two former senior security officials and other government officials familiar with the matter.

China routinely accessed low and medium level classification information on UK government servers over at least the last 10 years, including information marked “official-sensitive” and “secret,” as well as some material on the government’s secure IT networks, according to the people, who requested anonymity discussing delicate matters.