OT backup and restore testing: prove the recovery path
Inventory the files and dependencies needed to recover a control system, set recovery objectives, and test restoration on an isolated target.
Zero trust for OT
Identity- and policy-based access model for segmented OT environments.
An OT security approach that grants no implicit trust based only on network location. Every access request is evaluated against identity, device, application, policy, and context while preserving safety, availability, and deterministic control requirements.
See also: IEC 62443 · Zones and conduits · Industrial DMZ
Use the concept: Subnet calculator · OT asset inventory template · OT backup & restore test template
In depth
OT incident response: a ransomware playbook for plants that can't just stop
Build an OT incident response plan that respects process safety — roles, containment without shutdowns, backups that restore, and tested playbooks.
Safety instrumented systems: the boundary between control and protection
Basic SIS and SIF concepts, independence, SIL targets, proof testing, bypasses, and the questions to answer before connecting safety to a control system.