Methods and systems for network-based user authentication are provided. In one embodiment, a method is provided that include receiving a request to connect to a local network. The request may be received from a user device and may include a user device identifier. The method may then include allowing the user device to connect to the local network and create a partial identity of a user of the user device. The partial identity may include a plurality of identification factors associated with the user. The method may then include monitoring network activities of the user device and updating the partial identity based on the monitored network activities.