A method, computer system, and computer program product for protecting user confidentiality. Signal transmissions in a location in which a user is present are monitored by a computer system. A set of recording devices in an active state for recording the user in the location is identified by the computer system based on patterns in the signal transmissions monitored in the location. A set of alerts notifying the user of the set of recording devices in the active state for recording the user is generated by the computer system.