HONG KONG—A pro-Beijing online propaganda campaign has used phony websites and social-media posts to try to discredit a prominent German anthropologist who has investigated China’s crackdown on Muslims, according to cybersecurity researchers.
The activity, which dates to last year and continues, is part of a complex effort to push pro-China narratives using more than 70 suspected inauthentic news websites in 11 languages, all tied to a Chinese public-relations firm, according to a new report made public Thursday by the U.S.-based cybersecurity firm Mandiant Inc.