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securing-historian-server-in-ot-environment

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'Audits and hardens process historian servers (OSIsoft PI, Honeywell PHD,

When to use

• When deploying a new historian server in an OT environment and configuring it securely from the start
• When hardening an existing historian after a security assessment identified it as a high-risk target
• When designing historian data replication architecture through a DMZ for IT access to process data
• When implementing access controls to prevent unauthorized modification of historical process data
• When investigating suspected historian compromise or data integrity issues

When not to use

• IT-only database security without OT data
• real-time SCADA data transmission security
• historian selection and sizing decisions

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