Mark Zuckerberg, serial witness, takes the hot seat again

Seven years ago, Mark Zuckerberg, the CEO of Meta, testified for the first time in Congress. After a two-week boot camp by his lawyers to prep him, he answered questions in three back-to-back-to-back hearings over two days in a baptism by fire.

Zuckerberg, 40, has had even more practice since then. He has appeared before Congress eight times and testified in court at least twice, more than any of his peers at the biggest tech companies. He has defended his company, previously known as Facebook, on issues such as privacy, child safety and the spread…