Is it OK to use this random wireless network that I just found

When scanning for wireless connections you may find several that are unknown yet and appear open and available. Using them is risky. Very risky. If your device has an internal Wi Fi adapter, you can access Network Connections on Windows by clicking Start, typing andncpa.cpland and pressing Enter on your keyboard. Note: The process of disabling your Wi Fi card will vary from device to device. Consult your manufacturer documentation to learn more.