Where can I find hidden Wi-Fi?

Excuse me, could you possibly offer some insight into where one might locate a hidden Wi-Fi network? I'm currently in search of a secure connection that's not easily detected by others, and I'm wondering if there are any specific techniques or tools that I could utilize to uncover these hidden networks. Additionally, I'm curious about the potential risks and legal implications associated with accessing such networks, as I want to ensure that I'm proceeding in a responsible and ethical manner. Any guidance you could provide would be greatly appreciated.