If you connect to a Wi-Fi network that does not require a wireless network key, it is still secure enough to send private information because wireless networks encrypt all data anyway.

While it is true that most Wi-Fi networks use encryption to protect data transmissions, connecting to an open network without any security measures in place still puts your information at risk. Hackers can easily intercept data on such networks, so it is important to use caution when accessing open Wi-Fi.