OT Security Policies, Standards and Procedures
Copying IT policies to OT doesn't work - industry has different requirements and constraints. We'll create policies tailored to factory reality. You get IEC 62443 and NIS2 compliance without paralyzing production.
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What are OT Security Policies, Standards and Procedures?
OT Security Policies are a tailored Cyber Security Management System (CSMS) compliant with IEC 62443-2-1 that accounts for the real constraints of industrial environments — quarterly maintenance windows, shared SCADA accounts, and legacy systems — instead of copying generic IT policies that operators will simply ignore. nFlo develops the full policy set (access control, patch management, backup & recovery, incident response) and delivers compliance mapping to both IEC 62443 and NIS2; 68% of industrial companies currently have security policies that do not reflect OT realities.
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Discuss OT Security Policies, Standards and Procedures with your dedicated account manager.
IT policies don't fit OT realities
OT policies tailored to industry
OT Security Policies
Framework compliant with IEC 62443-2-1
Operational Procedures
Specific instructions for team
Practical Standards
Work in factory reality
IT Policy Doesn’t Work in Factory
Manufacturing company implemented security policy copied from IT. Requirement: “patching within 48h of release”. In OT this is impossible - compatibility tests with PLCs take weeks, maintenance windows once per quarter. Policy: “passwords changed every 90 days”. Shared account on SCADA used by 3 shifts - chaos at password change. Result: policies ignored, audit showed non-compliance.
Without policies tailored to OT:
- IT policies don’t work in industrial reality
- Team ignores unrealistic requirements
- No IEC 62443 and NIS2 compliance
- Audits reveal gaps in governance documentation
Documentation That Works in Factory
We create OT security policy and procedure framework compliant with IEC 62443-2-1 (Cyber Security Management System). We account for industrial specifics - maintenance windows, legacy systems, operational constraints.
What you get:
- Cyber Security Management System (CSMS) compliant with IEC 62443-2-1
- OT security policy tailored to your organization
- Access control procedures for OT systems (accounts, remote access, vendors)
- Change management procedure for OT changes
- Patch management procedure realistic for industry
- Backup & recovery procedure for OT systems
- Incident response procedure for OT (see: OT Incident service)
- Configuration standards for SCADA, HMI, PLC
- Operational procedures for OT engineers
- Compliance mapping documentation (IEC 62443, NIS2)
Who Is It For?
This service is for you if:
- You don’t have security policies for OT environment
- You must meet IEC 62443-2-1 (CSMS) or NIS2
- Your IT policies don’t work in factory reality
- You need documentation for audit or certification
- Team doesn’t know how to handle security in OT
IEC 62443-2-1 - Cyber Security Management System
What Does IEC 62443-2-1 Standard Require?
IEC 62443-2-1 defines requirements for Cyber Security Management System (CSMS):
1. Security Program Management
- Cyber security policy
- Security organization and responsibilities
- Risk management for OT
2. Risk Assessment
- OT asset identification
- Threat modeling for industrial systems
- Vulnerability management
- Risk treatment plans
3. System Integrity
- Change management
- Patch management
- Backup procedures
- Configuration management
4. Continuous Improvement
- Monitoring and review
- Audits and assessments
- Incident response and lessons learned
- Training and awareness
Key OT Policies
We create policies covering CSMS requirements:
Access Control Policy
- Account management (personal vs shared accounts)
- Authentication requirements (MFA where possible)
- Remote access (VPN, jump hosts, vendor access)
- Privilege management (least privilege for OT)
Change Management Policy
- Approval process for OT changes
- Testing requirements (lab testing before production)
- Rollback procedures
- Documentation and audit trail
Patch Management Policy
- Risk-based prioritization (critical CVE first)
- Testing protocol (compatibility with OT systems)
- Deployment windows (planned downtime)
- Compensating controls when patch impossible
Backup & Recovery Policy
- Backup frequency for different OT systems
- Offsite storage requirements
- Testing recovery procedures
- RTO/RPO for critical systems
Incident Response Policy
- Incident definition in OT context
- Escalation matrix
- IT/OT coordination during incident
- Post-incident review
Related Glossary Terms
Learn more about key concepts related to this service:
How we work
Our proven service delivery process.
Gap Analysis
Current documentation vs IEC 62443 assessment
Workshop
Sessions with IT, OT, management teams
Drafting
Policy and procedure creation
Review
Team consultations, iterations
Finalization
Documentation ready for implementation
Benefits for your business
What you gain by choosing this service.
IEC 62443 Compliance
Meet CSMS requirements
NIS2 Compliance
Documentation meeting regulations
Team Knows What To Do
Clear operational procedures
Don't Block Production
Account for industrial realities
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Read more →Frequently Asked Questions
Common questions about OT Security Policies, Standards and Procedures.
How do OT policies differ from standard IT policies?
OT policies account for industrial realities: maintenance windows once per quarter instead of 48h patching, shared accounts on SCADA, legacy systems without vendor support. Copying IT policies to OT ends with the team ignoring them.
How long does it take to develop a full set of OT policies?
Typically 2-4 weeks, depending on the size of the OT environment. This includes gap analysis, workshops with IT/OT/management teams, drafting, review and finalization of documents ready for implementation.
What documents do we receive at the end of the project?
A complete Cyber Security Management System (CSMS) compliant with IEC 62443-2-1: OT security policy, access control procedures, change management, patch management, backup & recovery, incident response, and compliance mapping to NIS2.
Will the policies help us pass an IEC 62443 or NIS2 audit?
Yes. The documentation is created with mapping to IEC 62443-2-1 and NIS2 requirements. We deliver a compliance matrix that can be presented to auditors as evidence of meeting the requirements.