Chinese anti virus firm Qihoo 360 said CIA hackers have spent more than a decade breaking into the Chinese airline industry and other targets, a blunt allegation of American espionage from a Beijing-based firm.In a brief blog post here published on Monday in English and Chinese, Qihoo said it discovered the spying campaign by comparing samples of malicious software it had discovered against a trove of CIA digital spy tools released by WikiLeaks in 2017.