Sources — Control Boundary
Institutional and technical reference points.
System Architecture and Control Segmentation
NIST SP 800-160 — Systems Security Engineering
NIST SP 800-53 — Security and Privacy Controls
Control Systems and Boundary Concepts
ISO 26262 — Functional Safety of Road Vehicles
ISO 13849-1:2015 — Safety of Machinery — Control Systems
System Context and Traceability
W3C — PROV Overview (Data Provenance Model)
IETF RFC 3161 — Time-Stamp Protocol