For IT security, the repository is as follows:

• The ISO 27000 series
• ISO / IEC 15408
• S99 of the ISA particularly suited to industrial IT systems
• IEC 61784-4 secure communication profiles
• IEC 62443 - System and network security - industrial processes
• VDE / VDI 2182: information security in the field of automation.

These standards are adopted voluntarily.