[taneq]

If Alice hires Bob, and Bob sells Alice's information to Charlie, and Charlie makes $2bn out of it, then it seems fair to hold Charlie responsible as well. Otherwise all you're doing is creating a market for sacrificial goats to take the fall while the company making the money gets away clean.

[donatj]

If Charlie doesn't know Bob's information is tainted, all you're doing is punishing the innocent for a crime they didn't commit.

[gcp]

It's called due diligence. The fact that Facebook didn't do it was a factor in the trial.