The one thing I haven't understood is just what the value was of the non-disclosure agreement he asked the hackers to sign? Even if you abstract away that they

The one thing I haven't understood is just what the value was of the non-disclosure agreement he asked the hackers to sign? Even if you abstract away that they are hackers who illegally accessed your data, apparently they were first signed... before??... Uber knew their real identities? So, what on Earth would a signature on a piece of paper from random internet aliases possibly accomplish?