Personal Information (Score 2, Insightful)

Asked if the association knew Brianna was 12 when it decided to sue her, Weiss answered, "We don't have any personal information on any of the individuals."

Before you can issue a subpoena or sue someone don't you have to know who they are first? If they already had the child's name, couldn't they have found out other basic information. At the very least, her age, residence, etc...

Otherwise, couldn't RIAA mistakenly sue someone for filesharing, by not having all of the necessary information or the individual they plan to prosecute?