Leaked Hacking Documents Offer Window Into Pervasive Chinese Surveillance

The interior of the I-Soon office, also known as Anxun in Mandarin, is seen after office hours in Chengdu in southwestern China's Sichuan Province on Feb. 20, 2024.

Chinese police are investigating an unauthorized and highly unusual online dump of documents from a private security contractor linked to the nation's top policing agency and other parts of its government — a trove that catalogs apparent hacking activity and tools to spy on both Chinese and foreigners.