An embodiment of the invention may include a method, computer program product and system for authenticating a user device. The embodiment may include receiving a plurality of device parameter from a user device. The embodiment may include selecting a user profile having a plurality of user profile characteristics based on determining a match between at least one device characteristic of the plurality of device characteristics with at least one user profile characteristic of the plurality of user profile characteristics. The embodiment may include determining whether a device parameter from the plurality of device characteristics of the user device matches a user profile parameter of the plurality of user profile characteristics. The embodiment may include increasing a device value based on determining that the device parameter matches the user profile parameter. The embodiment may include authenticating the user device based on determining that the device value is above a threshold value.