D3-EPL Physical Locking

Employ a mechanical locking device for securing moveable portions of physical barriers (e.g., doors, gates, drawers) in a secured position.

How it works A physical mechanism which has a associated credential which when entered enables the lock bolt to operate, i.e. open or close. Considerations • Consider that locks for specified materials should adhere to relevant regulations. • Lock equipment cabinets when not needed for operation or safety; set OT asset keys of devices (e.g., PLCs and safety systems) to the “RUN” position unless otherwise specified. • Locks and all associated hardware should be properly installed, operable, and free of substantive indications of tampering. • Records should be maintained concerning maintenance performed, access, and any possible tampering marks or associated incidents. • For locks operated by a physical key, a key management system should be implemented to manage and secure physical keys. • Key locks should provide a high degree of resistance to opening by force and tampering techniques.