What is BS EN IEC 62443-3-3 - Network and system security about?
BS EN IEC 62443-3-3 is the third part of the IEC 62443 series which provides detailed technical control system requirements (SRs) associated with the seven foundational requirements (FRs) described in IEC 62443 ‑ 1 ‑ 1 including defining the requirements for control system capability security levels, SL-C (control system).
These requirements would be used by various members of the industrial automation and control system (IACS) community along with the defined zones and conduits for the system under consideration (SuC) while developing the appropriate control system target SL, SL-T(control system), for a specific asset.
BS EN IEC 62443-3-3:2019 history
2019BS EN IEC 62443-3-3:2019 Industrial communication networks. Network and system security - System security requirements and security levels