Zatko's hearing showed the extent to which Twitter may be vulnerable to foreign exploitation, making his testimony "really significant," Sen. Josh Hawley told CNN on Tuesday.
Some of Zatko's most concerning allegations, Hawley said, were that Twitter's now-CEO, Parag Agrawal, had proposed making concessions to Russia's government and that Twitter may be providing Chinese entities with information that could be used to unmask people within China who may be illegally accessing Twitter, Hawley said.
There is also no reason to believe Twitter has meaningfully addressed a US government tip about a Chinese intelligence agent on Twitter's payroll, another of Zatko's explosive allegations, Hawley said.
"Nothing [Zatko] said today allays concerns on that score," Hawley told CNN.