melissa: businesses and government agencies around the world still reeling from the global cyber attack on at least 150 countries this weekend. and the big question remains who s responsible? one prominent theory right now, north korea. security researchers have documented similarities between the wanna cry ransom ware code and malware that s been linked to the rogue regime. senior foreign affairs correspondent greg palcott is raoepbly back from pyongyang and joins us live from london. greg, what more do we know about these hacks now? reporter: yeah. circumstance shall evidence. i think that s how the experts are now describing the linkage between these global hackings and the regime in north korea. now, what they are actually seeing is that the ransom ware, 300,000 computers, the ransom