The Chinese government, which has built an extensive digital infrastructure and security apparatus to control dissent on its own platforms, is going even further to expand its Internet network to [unmask and silence those who criticize the country on Twitter, Facebook](//www.nytimes.com/2021/12/31/business/china-internet-police-twitter.html) and other international social media. According to a report: These new investigations, targeting blocked sites inside China, rely on sophisticated technological methods to expand Chinese authorities’ reach and target list, according to a New York Times review of government procurement documents and legal files, as well as interviews with a government contractor and six people under pressure from the...