Focus Turns to North Korea Sleeper Cells as Possible Culprits in Cyberattack Since the 1980s, North Korea has been known to train cadres of digital soldiers to engage in electronic warfare. Now this force is under scrutiny. Share: Facebook Twitter Google+ Stumble Digg Email ThisBlogThis!Share to XShare to Facebook Related Posts:North Korea, Brexit, Kashmir: Your Tuesday BriefingIreland Diagnosed Record Number of H.I.V. Infections in 2018, Health Data SuggestsIranian Foreign Minister Mohammad Javad Zarif ResignsHumpback Whale Washes Ashore in Amazon River, Baffling Scientists in BrazilCubans Approve a Constitution, but Opponents Speak OutMysterious Dead Whale Washes Up Near the Amazon