The announcement didn't indicate who would replace Tayler. A day before Facebook CEO Mark Zuckerberg went before Congress to detail the Cambridge Analytica data scandal, the tech firm released its own version of events, which unsurprisingly framed its actions as within legal bounds. As the chief executive began answering questions on Capitol Hill yesterday, the social network released a tool letting users check if the tech firm accessed their information. When Zuckerberg returned for a second day in front of Congress, he revealed that his data was also accessed by Cambridge Analytica.