How to configure a local password security for the switch, can it be accessible with a default password?
Can the web browser interface password be deleted?
You can create two levels of access, Manager and Operator. You can do this first via the web interface. Also you can disable web access by no web-management in CLI or by setting Web Agent Enabled parameter to No via we-management.
Please take a look at this file: http://ftp.hp.com/pub/networking/software/59906023-1004-Management-Guide.pdf