Individual skill
securing-historian-server-in-ot-environment
This skill covers hardening and securing process historian servers (OSIsoft PI, Honeywell PHD, GE Proficy, AVEVA Historian) in OT environments. It addresses network placement across Purdue levels, access control for historian interfaces, data replication through DMZ using data diodes or PI-to-PI connectors, SQL injection prevention in historian queries, and integrity protection of process data used for safety analysis, regulatory reporting, and process optimization.
internal/tools/skills/data/ot-ics-security/securing-historian-server-in-ot-environment/SKILL.md
Source commit d42f381ad34843e71a42658e5c57290c713e85af
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- Observed behavior
- Network or broad shell
- Last checked
- Nov 9, 2026
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- Repository stars (not skill ratings)
- 1,329
- Repository last updated
- Nov 9, 2026
- License
- Apache-2.0
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- cybersecurity Repository topic
- security Repository topic
- bug-bounty Repository topic
- automation Repository topic
- autonomous-pentesting Repository topic
- ai-agent Repository topic
- ai-security Repository topic
- ethical-hacking Repository topic
- golang Repository topic
- penetration-testing Repository topic
- ot-security Declared skill tag
- ics Declared skill tag
- scada Declared skill tag
- industrial-control Declared skill tag
- iec62443 Declared skill tag
- historian Declared skill tag
- osisoft-pi Declared skill tag
- data-integrity Declared skill tag
- data Derived category
- legal Derived category
- operations Derived category
- security Derived category
- data-databases Derived category
- security-application Derived category
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# Securing Historian Server in OT Environment
## 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
**Do not use** for IT-only database security without OT data (see general database hardening), for real-time SCADA data transmission security (see detecting-attacks-on-scada-systems), or for historian selection and sizing decisions.
## Common Misconfigurations & Verification
