The United States and Britain have filed charges and imposed sanctions on a company and individuals linked to a Chinese state-backed hacking group, APT31, which they allege engaged in a sweeping cyber espionage campaign. APT31, also known as Zirconium, operated through a front company, Wuhan Xiaoruizhi Science and Technology Company (Wuhan XRZ), from at least 2010 until January 2024.