https://www.theregister.co.uk/2017/11/08/marissa_mayer_yahoo_hack_congress/

Poor Marissa Mayer. After selling off Yahoo! and floating away on her golden parachute, she must have been looking for a nice rest. But US Congress wanted her to explain how every single user account on the portal got hacked.

On Wednesday, she testified before the Senate Committee on Commerce, Science, and Transportation on the matter, but reportedly wasn't too keen to attend. The Hill reports that it finally took a subpoena to drag her to the hearing – an account Mayer's personal staff reject, saying Mayer had decided to take part before receiving the subpoena.