A political dissident and “close friend” of murdered journalist Jamal Khashoggi is suing Twitter Inc. claiming the company hired an operative of the Kingdom of Saudia Arabia (KSA) who breached the company’s privacy policies.

Omar Abdulaziz, an activist who lives as a refugee in Canada, claims Twitter, along with consulting firm McKinsey & Co., have exposed him, his family and his friends to “imprisonment, torture, and even death,” according to a complaint filed in the U.S. District Court for the Northern District of California on Friday.