Denial of Control
|Denial of Control|
Adversaries may cause a denial of control to temporarily prevent operators and engineers from interacting with process controls. An adversary may attempt to deny process control access to cause a temporary loss of communication with the control device or to prevent operator adjustment of process controls. An affected process may still be operating during the period of control loss, but not necessarily in a desired state.123
In the Maroochy attack, the adversary was able to temporarily shut an investigator out of the network preventing them from issuing any controls.