The cable is locked to the charging point and is only unlocked when the customer ends the charging session via an RFID card or through the vehicle's system. This means that the cable cannot be removed by a third party.
Please not that this is only the case when the cable is locked to the e-vehicle. Some models of Type 1 plugs are not equipped with a locking mechanism. In this case, the plug should be secured to the vehicle by other means.