Boston GlobeNorth Korea proposes joint probe with US over Sony hackBoston GlobeTOKYO — Warning of “serious consequences” if the United States retaliates against it, North Korea on Saturday insisted that it was not behind a damaging cyberattack on Sony Pictures and offered to prove its innocence by proposing a joint investigation with ...Sony chairman hits back at Obama, stands by company's decision to pull filmJerusalem PostNorth Korea wants joint investigation with US into Sony hackMSNBCNorth Korea Denies Role in Sony Hack, Demands Joint Probe With USBusinessweekReuters -The Week Magazine -Voice of Americaall 3,145 news articles »