It has also created a shadow workforce of well-paid overseas IT professionals using fake identities, he said, giving Kim Jong-un a vital resource to fund his nuclear ambitions.“We believe cyber heists and overseas IT workers are right now North Korea’s biggest revenue generator,” he said.It was “worrisome” these “malicious cyber actors” were linked to the North’s munitions industry, defence ministry and General Reconnaissance Bureau - the intelligence agency behind the North’s clandestine activities - all of which are sanctioned for their weapons development, he added.“We do assess that of the...