EXPLAINER: Why Twitter’s former security head is testifying

Peiter Zatko, the former Twitter security chief, will testify before Congress on Tuesday. He’s accused the social network of negligence with privacy and security in a whistleblower complaint. Twitter calls his description of events “a false narrative” Twitter says it removes 1 million spam accounts daily, removing 1 million daily active users. The Senate Judiciary Committee is scheduled to hold a hearing on the whistleblower allegations in the coming weeks. The hearing will be the first of its kind, but it might not be the last, with a number of lawmakers looking to hear from a lone whistleblower on privacy issues in the U.S. Congress has little documentary support for his claims so far, unlike the Facebook whistleblower, Frances Haugen, whose complaint last year included troves of documents. . . .