Operation and cybersecurity maintenance

Cybersecurity maintenance for ICSs and SISs is an integral part of ensuring the safety and security of operations, and it requires a disciplined, continuous management approach. Regular maintenance activities should cover a broad spectrum of tasks aimed at preserving the integrity, availability, and confidentiality of system components and the data they process.

In this context, the three elements addressed next are essential for safe operation at all times.

Hazard

In order to ensure a predictable and reliable behavior of the ICS, it is important that all maintenance and modifications of ICSs are executed by authorized and qualified personnel in a structured and defined way as laid down in this procedure. Non-compliance with this procedure may lead to the following:

• Contradictory information in operating, engineering, and asset management environments
• Corruption of control systems databases
• Unreliable or failing hardware...