What is one of the functions of field components and PLCs under attack?

Field components and Programmable Logic Controllers (PLCs) are critical parts of industrial control systems that manage various processes and equipment. When these components are under attack, one significant function they may experience is the disruption of communications. Attackers often seek to interrupt or manipulate signals, which can lead to failures in data transfer between devices or to control systems. This disruption can prevent operators from receiving accurate information about system states or can even provide false data, which can endanger the overall operation and safety of industrial processes.

In contrast, while improving productivity, fixing programming errors, and enhancing device security are important aspects of field components and PLCs in their normal operational context, these functions do not typically align with the dynamic of an attack scenario. Instead, an attack often aims to compromise functionality, manipulate data, or impair communication, making the disruption of communications a forefront concern in such situations. This understanding is crucial for cybersecurity practices within industrial environments, emphasizing the need for robust security strategies to protect against potential threats to operational integrity.