securing-historian-server-in-ot-environment

Audits and hardens process historian servers (OSIsoft PI, Honeywell PHD, GE Proficy, AVEVA Historian) in OT environments: Purdue-level network placement, interface access control, secure DMZ replication via data diodes or PI-to-PI connectors, SQL injection prevention, and process data integrity. Use when auditing or hardening a historian server, or designing secure OT-to-IT data replication through a DMZ.