|Data Sources||Network protocol analysis, Packet capture|
Adversaries may perform location identification using device data to inform operations and targeted impact for attacks. Location identification data can come in a number of forms, including geographic location, location relative to other control system devices, time zone, and current time. An adversary may use an embedded global positioning system (GPS) module in a device to figure out the physical coordinates of a device. NIST SP800-82 recommends that devices utilize GPS or another location determining mechanism to attach appropriate timestamps to log entries1. While this assists in logging and event tracking, an adversary could use the underlying positioning mechanism to determine the general location of a device. An adversary can also infer the physical location of serially connected devices by using serial connection enumeration.
An adversary attempt to attack and cause Impact could potentially affect other control system devices in close proximity. Device local-time and time-zone settings can also provide adversaries a rough indicator of device location, when specific geographic identifiers cannot be determined from the system.
- The Backdoor.Oldrea payload has the capability of enumerating OPC tags, in addition to more generic OPC server information. The tag names, depending on the naming convention, can provide information about facilities and locations.23
- Prior to wireless network installation, survey the area to determine the antenna location and strength that minimizes exposure of the network. An adversary is capable of extending the effective range of a wireless LAN with powerful directional antennas.1
- Restrict access to control room(s), portable devices, and removable media, which should be locked down and physically secured. Physical control room or control systems access often implies also gaining logical access.1
- Unauthorized and suspicious media should be avoided and kept away from systems and the network.1
- Ensure ICS and IT network cables are kept separate and that devices are locked up when possible. Protecting and securing cables reduces potential collateral damage and the likelihood of being tampered with.1
- Whenever possible, protect location information from outside eyes. Limit viewing of any stored data to those with the need to know and try to restrict data sending to encrypted channels.1