[PCI DSS 3.0] 12.3.4 A method to accurately and readily determine owner, contact information, and purpose (for exa

12.3.4 A method to accurately and readily determine owner, contact information, and purpose (for example, labeling, coding, and/or inventorying of devices)

12.3.4 Verify that the usage policies define a method to accurately and readily determine owner, contact information, and purpose (for example, labeling, coding, and/or inventorying of devices).

Malicious individuals may breach physical security and place their own devices on the network as a “back door.” Personnel may also bypass procedures and install devices. An accurate inventory with proper device labeling allows for quick identification of non-approved installations. Consider establishing an official naming convention for devices, and log all devices with established inventory controls. Logical labeling may be employed with information such as codes that can correlate the device to its owner, contact information, and purpose.