主题：wow 不知道TG有没有防备 -- 张lini

Documents obtained by Mr. Snowden indicate that the United States has set up two data centers in China — perhaps through front companies — from which it can insert malware into computers. When the Chinese place surveillance software on American computer systems — and they have, on systems like those at the Pentagon and at The Times — the United States usually regards it as a potentially hostile act, a possible prelude to an attack. Mr. Obama laid out America’s complaints about those practices to President Xi Jinping of China in a long session at a summit meeting in California last June.