Is it safe to leave Wi-Fi Direct in its default mode, and how can I make it more secure?

By default, Wi-Fi Direct is set to 'Automatic' mode without an administrator password, which allows anyone in wireless range to connect and access all functions and settings of the printer. If higher security levels are desired, HP recommends changing the Wi-Fi Direct Connection Method from 'Automatic' to 'Manual' and establishing an administrator password. You can change the security settings from the printer's embedded web server (EWS).