Embodiments herein disclose a method and system for authenticating users of an electronic device. In an example, data pertaining to a user of the electronic device is collected for authentication. The data is data indicative of an interaction behavior of the user with the electronic device. A deviation of the collected data from a behavior model of the user is checked. To generate the behavior model, data from multiple users is collected to create the behavior model corresponding to each of the users, each behavior model is indicative of data uncommon between the user corresponding to the behavior model and other users in the plurality of users to separate the user corresponding to the behavior model from other users in the multiple users. Further, an access control policy is enforced on the electronic device, based on the deviation of the collected data from the behavior model of the user.