I am on a military operation in a country that has below average infrastructure. The force that I am with provides a PASSWORD protected WIRELESS internet connection. Recently another option has appeared, that is not password protected.

First question: How do I find out information about this connection. Such as who owns it.

Second question: What information can it rip from me if I use it?Dont use it for any surfing requiring anything important. You cant get infected with anything unless you chose to execute a script etc. I would use wireshark to sniff what else is on the network. Also what type of location are you in, such as are you by another residence or hotel, or business which may have a real wifi service. There are some evil free wifi's out there to bait people and spoof you up FAKE pages to steal info, as well as monkey in the middle attacks where someone offers up a wifi and waits for someone to attach and then they sniff packets for information, and probe for open ports, and try exploits against the joined system to try to access a system that is not patched to latest updates and is VULNERABLE, or has a weak or non existent firewall set up. Also set up a USER account on your system with USER privileges instead of ADMIN privileges which most home users run all the time and get nailed. USER account privileges will protect from infections as long as there are no exploits to run higher privileges in USER mode.

Answer # 1 - You wont get much info on WHO owns it

Answer # 2 - I wouldnt use it if you already have a secure method of connecting. You can have a monkey in middle attack on you if you connect!In your CASE use of vPN would be recommended.There are Wi-Fi systems that use VPN. It requires special software.
http://en.wikipedia.org/wiki/Virtual_private_network