EditPassword is a global setting in Sandboxie Ini. It is managed by the Sandboxie service and specifies a 160-bit SHA1 hash generated from the configuration password.
. . . [GlobalSettings] EditPassword=0D03090004070E09050C0A010100000108010B03
When the Sandboxie Ini configuration file includes this setting, the Sandboxie service will keep the configuration file permanently locked, in order to prevent unauthorized modifications.
See also: Configuration Protection.