The Liberal Caucus Research Bureau paid $100,000 in 2016 to the man at the heart of an international scandal over the mining of private information of 50 million Facebook users. But what exactly did Christopher Wylie do for them?

Facebook Inc's stock price continued to plummet Tuesday as the social media giant faces questions from U.S. and U.K. officials over its handling of users' personal data.

The sharp loss for Facebook is dragging other technology companies lower as U.S. stock indexes skid.