WannaCry ransomware attack possibly linked to North Korea

The ransomware attack that held thousands of computers hostage late last week might be linked to a hacker group with ties to North Korea, researchers have found. 

On Monday, Google security researcher Neel Mehta posted a cryptic set of characters on Twitter together with the hashtag #WannaCryptAttribution. Kaspersky Lab researchers then explained that Mehta has posted two similar code samples, one from an early version of WannaCry, and one originating from Lazarus, a hacker group which possibly originates from North Korea.