Twitter Was Notified at Least 1 Chinese Spy Was on Company’s Payroll, Whistleblower Testifies

Peiter “Mudge” Zatko, former head of security at Twitter, testifies before the Senate Judiciary Committee on data security at Twitter, on Capitol Hill in Washington on Sept. 13, 2022. Kevin Dietsch/Getty Images

The former head of security at Twitter was told earlier this year by the U.S. government that there was at least one agent of China’s top intelligence agency, the Ministry of State Security (MSS), working as an employee at the company.

This was one of the revelations made by Peiter “Mudge” Zatko, a whistleblower who served as Twitter’s head of security for about 14 months before being fired earlier this year, during testimony before a Senate Judiciary Committee hearing on Sept. 13.