Peiter “Mudge” Zatko, former head of security at Twitter, testifies before the Senate Judiciary Committee on Tuesday. (Photo by Kevin Dietsch/Getty Images) Twitter couldn’t detect foreign agents on its own, whistleblower testifies Whistleblower Peiter "Mudge" Zatko said that "if you're not placing foreign agents into Twitter … you're most likely not doing your job." Sep 13, 2022 By Tonya Riley