The Industrial Control System (ICS) is a general term used to describe hardware and software integrations with network connections to support critical infrastructure. ICS technologies include, but are not limited to, control and data acquisition controls (SCADA) and distributed control systems (DCSs), automated systems and control systems (IACSs), programmable logic controllers (PLCs), programmable automation controls

The understanding Industrial Control System(ICS) basic term is used for any distributed control system (DCS), programmable logic controller (PLC), supervision and data acquisition (SCADA) or automation systems used in industrial environments critical infrastructure. ICS security is designed to protect the system from any interruption whether intentionally or unintentionally, which may lead to undesirable ICS operations.