1. A method to secure data on a computing system, the method comprising: receiving a request to execute an application instance of an application; identifying a role to be associated with the application instance based on one of user inputs, an object-role mapping, and a set of rules, wherein the application is executable in a plurality of application instances, and wherein the role of the application instance is indicative of a nature of activity to be performed in the application instance; associating, based on the identifying, the role with the application instance; and storing, based on the role, data pertaining to the application instance in a memory location allocated to the role of the application instance, wherein each role has a dedicated memory location.