As law enforcement agencies get better at tracing cryptocurrency, such laundering services have grown in importance.

The new-look AlphaBay will have to work to regain trust in the criminal underworld.

DOJ worked with international law enforcement to take down an online marketplace, Slilpp, offering stolen login credentials.

Hydra has remained resilient where others have fallen to law enforcement operations.

DOJ had hailed the indictment of the man and a co-conspirator as "the single most significant law enforcement disruption of the Darknet to date."

Who says securities fraud is easier than rocket science?