Part 1-1: Terminology, concepts, and models; Part 1-2: Master glossary of terms and definitions; Part 1-3: Security program ratings; and Part 1-4: IACS security lifecycle and use cases

Part 1-1: Terminology, concepts, and models; Part 1-2: Master glossary of terms and definitions; Part 1-3: Security technologies for IACS; and Part 1-4: IACS security lifecycle and use cases

Part 1-1: Terminology, concepts, and models; Part 1-2: Master glossary of terms and definitions; Part 1-3: System security conformance metrics; and Part 1-4: IACS security lifecycle and use cases

Part 1-1: Terminology, concepts, and models; Part 1-2: Master glossary of terms and definitions; Part 1-3: System security conformance metrics; and Part 1-4: Security program requirements for IACS service providers