You just Google find someone else's IP address and you will find a lot of web sites to find someones IP address
Yes. If it came to you by accident and you know it's not your mail, you should put it back into the U.S. mail system. At least cross out the address if it is "your" address but some total stranger's name.
no it is not illegal but is good to check first
Yes. If it came to you by accident and you know it's not your mail, you should put it back into the U.S. mail system. At least cross out the address if it is "your" address but some total stranger's name.
yes. If they know your password it is easy for them. Although most the time they don't know your password and that is why they are called hackers.
yes
You cannot recover someone else's chat history on Facebook unless they give you access to their account. Facebook does not provide a feature that allows you to retrieve another person's chat history without their permission. It's important to respect others' privacy and not try to access their private conversations without their consent.
Yes you can. I don't exactly know how but my parents have done it. Also many police officers do.
It can depend on what your motive was in doing so. If your motive was unlawful, yes, it would be a violation of US Postal Laws.
Yes you can.
Yes,there is.
Yes, it's forgery.
Yes.