An online dump of Chinese hacking documents offers a rare window into pervasive state surveillance

Open this photo in gallery: A sign reading ‘Anti-cyber crime office’ is displayed near an entrance door to the I-Soon office, also known as Anxun in Mandarin, in Chengdu, in southwestern China’s Sichuan Province on Feb. 20.Dake Kang/The Associated Press 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 catalogues apparent hacking activity and tools to spy on both Chinese and foreigners. Among the apparent targets of tools provided by the impacted company, I-Soon:…