For those who don't know about the incident, or just don't remember, Bitfinex has been hacked 2016, and last year, a couple was arrested and charged.
Today, the husband pleaded guilty to the money laundering conspiracy charges and admitted to being the hacker[1].
I have seen a few videos and documentaries about this case when they were caught and I must say, I still find it difficult to believe that they're actually the masterminds behind this.