Excel file has password protection but these activities - excel application scope, read/write range, read/write cell - the property field password should also be encrypted or securestring.
Use case scenario:
The config.default.xlsx file and RPA script will be deployed/shared to many dedicated-user PCs including shared-user PCs. Each config.xlsx cannot be opened other than the intended user. Another config.default.xlsx has values column with account or sensitive information removed/deleted. In this trusted environment, users cannot see each other folders, files or drives. Each user will need to update config.default.xlsx values, saved/renamed to config.xlsx and moved to user secured folder before running UiRobot. Hope to implement this procedure as part of code review.