Naps may have been the obvious victim of the cyber attack but the biggest victims are the individual AAS users.
Law enforcement action against users probably isn't the greatest concern for individual users although it would be tempting for some grandstanding local prosecutor to do a quick search of all the users in his district.
There are other entities that are far more interested in this data.
Competing AAS sources will make use of the data to spam/scam the customer list. It's a data goldmine for every startup lab and scammer to exploit. Beware.
USADA is already scanning AAS-related forums to catch AAS "cheats" like they did to
bust that masters cyclist on the isarm forum. USADA and NADOs will cross-reference the list against amateur/pro athletes in their databases.
Coinbase and Circle could add all the bitcoin addresses to their databases of addresses known to be associated with illegal activity and suspend any user accounts who have sent bitcoin to those addresses.
Professional colleagues, employers, friends, girlfriends, ex-wives, enemies, etc. could also satisfy their curiosity about the unnatural muscle mass of people in their gyms, workplace, classroom, etc. The real-life and social media consequences can be a bitch.
The data breach is the Mossack Fonseca of the steroid world. It's The Moldova Papers.
Instead of a bunch of rich people and corrupt politicians that no one likes, it's a bunch of steroid users that no one likes whose privacy has been violated. And rather than be concerned about the motives and the perpetrator of the attack, everyone is enjoying delving into all the secrets exposed.
If the perpetrator is really a competitor seeking to gain a competitive advantage, the willingness to recklessly and maliciously expose so much individual customer data represents a new low. The data breach represents a major escalation in AAS black market competitive warfare.