Résumé sent on email helps US find hacker behind WannaCry virus

US investigators have revealed that a résumé was used to track down North Korean hacker Park Jin Hyok, who was charged on Thursday over the 2017 WannaCry ransomware attack. Park's résumé and photo was tracked after being forwarded by his superior on free email services including Gmail. Investigators accessed about 1,000 email and social media accounts using about 100 warrants.