I think the term data-laundering will come into use. It will describe the practice of taking illegally obtained data (such as this OPM leak) and selling it and plausible deniability that it comes from a clean source to willing buyers who would not otherwise have touched it because of legal liability.

I an utopia, a forbidden-fruit doctrine would develop and be enforced. Data from an illegal leak would be illegal to touch. In practice, who knows.