Moxie Marlinspike, the CEO of Signal, has announced that he is stepping down as CEO after almost a decade of working on the project. He believes that the team he has built is capable of continuing the mission of Signal without his involvement. Brian Acton, the founder of WhatsApp, will serve as interim CEO during the search for a new CEO. The search for a new CEO is now open, and Marlinspike will remain on the Signal board to help guide the organization.