Need lawyer, unsure what area. IP-address was subpoenaed. Got complaint.. has nothing to do with us. Don't want our personal info involved in case

We received a letter from Comcast saying our IP Address had been subpoenaed as part of a civil case from another state -- we live in IL, case is in AZ. We immediately called the clerk of court there and got a copy of the complaint. It is about some former employee of some company we have never heard of hacking in and stealing documents. Has utterly nothing to do with us. But if we let the subpoena stand, our personal information, documents, all sorts of stuff will become entangled with this case file and end up as public access material. That's not fair. But we don't know what to do about it.