[jacobgold]

Yes, NDAs are very common, but there are more and less ethical ways to use them.

A judge can decide to invalidate the contract entirely, which is what I'm suggesting would be the correct remedy in this case.

[consensus1]

What grounds are there to void this contract that was agreed on my both parties?

[jacobgold]

We don't have all of the facts but the contract could be voided if it was signed under duress, used to hide misconduct and prevent whistleblowing, etc.