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Sunday, April 19, 2026

Live updates: Twitter's whistleblower testifies before Senate committee - CNN

The hearing featuring Twitter whistleblower Peiter “Mudge” Zatko has kicked off.

Zatko appeared before lawmakers Tuesday in a dark gray windowpane suit and light blue tie. He walked in holding a wooden cane — which has flames on it — and he sat before the committee at a low table in the center of the massive Hart Senate office hearing room, which had been changed from its initial location to accommodate a larger audience.

It's his first public appearance since his bombshell allegations against Twitter were reported last month by CNN and The Washington Post. He previously alleged Twitter has undisclosed security and privacy vulnerabilities.

US lawmakers sent Twitter more than a dozen questions about its security practices Monday, on the eve of the whistleblower's testimony.

With his decision to go public with his concerns, Peiter "Mudge" Zatko could find himself at the center of renewed regulatory scrutiny of Twitter, as happened when Frances Haugen blew the whistle on Facebook.

Before joining Twitter, Zatko, now 51, led an influential cybersecurity grantmaking program at the Pentagon,...



Read Full Story: https://www.cnn.com/tech/live-news/peiter-zatko-hearing-twitter-privacy-secur...