The North Korean hacker group Lazarus is responsible for the robbery of over half a billion dollars in cryptocurrency since 2017.
source https://www.google.com/url?rct=j&sa=t&url=https://cryptoticker.io/lazarus-stole-cryptocurrency/&ct=ga&cd=CAIyGmM2Nzk3ODA2ZWViNjVjODI6Y29tOmVuOlVT&usg=AFQjCNGLbXKkwftamVQPJRvAxubMBKScgw
