Security risk evaluation across user devices is disclosed herein. An example method includes registering one or more devices associated with a first user with the computer system, determining respective security sub-scores for each item of the one or more devices, computing an overall security score for the first user based, at least in part, on an aggregation of the security sub-scores, and creating a user profile based on the overall security score, the user profile to enable the at least one of the one or more devices to exchange data with an external device when the overall security score meets a security score threshold, the user profile to prevent the at least one of the one or more devices from exchanging data with the external device when the overall security score does not meet the security score threshold.