You would have to look into your state law. Generally, what he did would be illegal, but getting the state to prosecute a correctional officer is another matter. If he was prosecuted, you'd certainly have a stronger civil case.

If there is a viable civil case is another matter. It is not libel per se, it is libel per quod, which means you would have to prove actual damages. It is not like you are being wrongly accused of having a criminal record. Not really sure how the information released damages you to a degree that you can convince a jury. Is the jury going to care? Will they like you? There are many things involved in a civil action.

I doubt you will find an attorney to take the case on contingency, and I would guess you don't have 50k sitting around to spend on counsel to prove a point.

Yes, it is invasion of privacy, but all the above issues apply.