1. A method for configuring control rules for applications executable on a computer, the method comprising: classifying, by a hardware processor, at least one computer application into one of a plurality of classification groups that include at least one predetermined classification group and an unknown classification group; and configuring at least one control rule when the at least one application is classified in the unknown classification group; wherein the configuring of the at least one control rule includes: determining, by the hardware processor, a computer competency score for a user of the computer; categorizing the at least one application into one or more predefined categories, and defining control rules for the at least one application based on the determined computer competency score for the user and the one or more predefined categories of the at least one application.