well if you talk about their privacy as in where they live and etc. but not really unless they think it is an invasion of privacy.
Yes.
It is possible. If someone conspires and tries to do things to you then yes it is illegal and a person can be sued or possibly imprisoned. My advice is not to do it and save a lot of trouble.
anyone can sue another person at any time in there life no matter how they stand finacally in their past.
Such action is not possible. However, a person who commits an act of harassment that results in physical and/or emotional and/or financial harm to another person can be sued in civil court.
If someone copies a copyrighted website, then that is piracy and the person could be sued
Yes, congress.
Who actually gets sued is up to the person that got hit, but ideally the person who hit your car first and not you.
be sued in court for copyright infringement
That person could be sued and depending on the importance of the lie, he may be taken to prison.
other person get sued
Yes, they can be sued. Its law.
No. They can only go after the assets of the person that is being sued. If you have a joint account with that person that is part of the other person's assets. Any account that is just in your name is safe as you are not the person being sued.