Multi-stage cyber attacks net North Korea millions in virtual currencies

North Korea's government-backed hackers have been blamed for a rising number of cyber attacks, including the so-called WannaCry cyber attack.

SINGAPORE/SEOUL: A series of recent cyber attacks has netted North Korean hackers millions of dollars in virtual currencies like bitcoin, with more attacks expected as international sanctions drive the country to seek new sources of cash, researchers say. 

North Korea's government-backed hackers have been blamed for a rising number of cyber attacks, including the so-called WannaCry cyber attack that crippled hospitals, banks and other companies across the globe this year.