https://www.cnbc.com/2018/05/25/chinese-police-take-down-gang-of-inventive-online-reputation-cleaners.html

Police in Shanghai have busted what they say is gang who duped websites into deleting negative reviews by posing as government censors and media personnel.

The gang made 3 million yuan (US$470,000) from the activity before the bust, according to Chinese news site ThePaper.cn.