Modifying the Password
On the Wireless Settings tab, in the WI-FI ZONE TETHERING properties. Set the Wi-Fi zone tethering selection to On to enable the WI-FI ZONE TETHERING properties.
In the WI-FI ZONE TETHERING properties, select MODIFY PASSWORD.

Passwords are case sensitive.
Action:
Change - Enter your own password and confirm it (high safety)
Clear - Do not use password (no safety)
Use default - Use the default password (low safety).
The default password is password