Re: New???
Without evidence of a criminal activity they seized the servers.
Without evidence you've assumed this. The article mentions a drug lab, it is likely they already knew or at least suspected they were involved with drugs, and if you're a drug dealer you obviously have to be involved in money laundering, so...
Depending on the circumstances under which they seized the servers, they might be able to look at all their customers if those circumstances made it likely they were mostly criminals (i.e. they sold them on a dark web site that is invite only for drug dealers, for instance) or they might only be able to target certain individuals that they have other reasons to suspect.
Biting the hand that feeds IT
