Twitter's crypto head quits as part of mass exit of staff at firm

Twitter's crypto development team head Tess Rinearson has quit the firm as part of employees' mass exit after Twitter's new owner Elon Musk asked the employees to commit to an "extremely hardcore" culture. Rinearson posted a tweet with the salute emoji, followed by a blue heart. Senior software engineer of the crypto unit Hamdi Allam has also left the firm.