**Physical controls** include door locks, cabinet locks, surveillance cameras, badge readers, etc. They are used to limit physical access to physical assets by unauthorised personnel. Examples of physical controls: | **Control Name** | **Control Type** | **Control Purpose** | | :--- | :--: | :--: | | Time-controlled safe | Deterrent | Reduce attack surface and overall impact from physical threats | | Closed-circuit television (CCTV) | Preventative / Detective | Closed circuit television is both a preventative <br>and detective control because it’s presence can <br>reduce risk of certain types of events from occurring, and can be used after an <br>event to inform on event conditions | | Locking cabinets (for<br>network gear) | Preventative | Bolster integrity by preventing unauthorised<br>personnel and other individuals from physically<br>accessing or modifying network infrastructure gear<br> | | Signage indicating alarm<br>service provider | Deterrent | Deter certain types of threats by making the <br>likelihood of a successful attack seem low | | Locks | Deterrent / Preventative | Bolster integrity by deterring and preventing unauthorised personnel,<br>individuals from physically accessing assets | | Fire detection and<br>prevention (fire alarm,<br>sprinkler system, etc.) | Detective / Preventative | Detect fire in physical location and prevent<br>damage to physical assets such as inventory, servers, etc. |