Editing Computer case (section)

==Intrusion detection==
Some computer cases include a [[Momentary switch|biased switch]] ([[push-button]]) which connects to the motherboard. When the case is opened, the switch position changes, and the system records this change. The system's [[firmware]] or [[BIOS]] may be configured to report this event the next time it is powered on. This physical [[intrusion detection]] system may help computer owners detect tampering with their computers. However, most such systems are quite simple in construction; a knowledgeable intruder can open the case or modify its contents without triggering the switch.

In the past, many tower cases (including full tower cases) intended to house [[file server]]s featured a [[Round-key lock|locking]] door covering the external drive bays. This was a security feature intended to prevent the theft of the [[CD-ROM]] discs the drives would be holding. At the time, CD-ROM capacity was larger than the hard disks available, and many business-critical databases were distributed on this media. These databases were often very expensive or held proprietary data, and hence would be likely targets for casual theft.