Security Cameras are cameras the player can find attached to the walls of buildings, surrounding the Mobile Command Centers in each district. If Delsin gets within their viewing range, they produce a siren and will alert the DUP of Delsin’s presence. There is a total of 76 Security Cameras in the game, and they’re all shown on the map as basic camera icons (not to be confused with the camera in a box icon that is for Hidden Cameras).
The Security Cameras are fairly weak, as destroying is a simple matter of shooting them with a normal shot a few times. If you can, shooting at them from a distance they can’t see you is best, as to avoid them spotting them and calling in DUP agents.