Peiter “Mudge” Zatko, the Twitter whistleblower who has alleged widespread security issues at the social media company, testified before the Senate Judiciary Committee on Tuesday.
Zatko was Twitter’s head of cybersecurity from late 2020 until January of this year, when he was fired for what the company called “ineffective leadership and poor performance.” But Zatko has denied claims that he’s a disgruntled worker.
“I’m here today because Twitter leadership is misleading the public, lawmakers, regulators and even its own board of directors,” Zatko said in his opening remarks on Tuesday.
“When an influential media platform can be compromised by teenagers, thieves and spies, and the company repeatedly creates security problems on their own, this is a big deal for all of us,” he added.
Zatko’s most serious allegations, first detailed in a CNN/Washington Post report last month, claim thousands of Twitter employees have access to user data and insist some workers have intentionally installed spyware on their computers at the request of external parties. He quoted the late author and activist Upton Sinclair to explain Twitter leadership’s alleged ignorance about the issues: “It is difficult to get a man to understand something when his salary depends on his not understanding it.”
Twitter has denied Zatko’s allegations, claiming they’re “riddled with inconsistencies and inaccuracies.”
In his testimony on Tuesday, Zatko alleged Twitter officials “don’t know what data they have, where it lives, or where it came from, and so, unsurprisingly, they can’t protect it.” He also claimed Twitter may knowingly have foreign agents on its payroll, leaving users’ data susceptible to malicious use by foreign governments.








