Top cybersecurity boffin, wife vanish as FBI raids homes

US federal agents executed court-authorized searches at the Bloomington and Carmel homes of Indiana University professor Xiaofeng Wang, a noted computer security academic, and his spouse, IU employee Nianli Ma; IU removed their profiles and reportedly terminated Wang after learning he accepted a position in Singapore. Authorities and IU declined details, there are no known charges or arrests, the couple are not in custody, and their attorney says they intend to clear their names; the article situates the event within historical scrutiny of China-linked academics.