A system and/or method may be provided to silently authenticate a user. An example method of silently authenticating a user includes receiving a set of device characteristics from a user device and identifying, based on the set of device characteristics, the user device. The method also includes determining whether to trust the user device and determining whether the user device is associated with a user that was previously authenticated. The method further includes in response to determining to trust the user device and that the user device is associated with the user that was previously authenticated, authenticating the user based on the previous authentication.