Special Counsel Interviews Cybersecurity Researcher Tied to Trump

A cybersecurity researcher who described being recruited to vet hacked Hillary Clinton emails last year by a GOP operative tied to President Donald Trump's campaign team has been interviewed by the FBI's special counsel, Robert Mueller, Business Insider has learned. Mueller interviewed Matt Tait, a former information-security specialist at Britain's Government Communications Headquarters who tweets as @pwnallthethings, several weeks ago, said a source familiar with the matter.