[seiji]

Ways I've seen this play out before:

• Someone got in to one user database, but not all of them.

• Someone got into the complete user database, but were found out during the intrusion and cut off.

• Someone found a sharded DB dump or backup.

• Someone found/stole/virus'd a dev laptop with DB dumps.

• Someone sat on the network for a while and grabbed app server -> DB traffic.

Replace "Someone" with "russians," "brazilians," or "something behind tor" for more accurate portrayals.