Most OT Environments Run at 30–50% of Achievable Security Posture
That is not negligence — it is the accumulated consequence of operational priorities, legacy procurement decisions, and security guidance written for IT environments. Default configurations left in place. Unnecessary services never disabled. Remote access paths opened for a vendor visit years ago and never closed. These are not edge cases. They are what we find consistently, across sectors, in environments that have passed compliance reviews.
Security hardening closes the gap between where your configuration is and where it needs to be — without disrupting production. It is not an audit. It is hands-on, engineer-led work against your actual hardware, your actual protocols, and your actual operational constraints.
What We Harden
- PLC and RTU configuration — disabling unnecessary services, functions, and communication ports
- SCADA and HMI hardening — application whitelisting, account privilege reduction, audit logging
- Engineering workstation lockdown — removable media controls, network isolation, software restrictions
- Industrial protocol configuration — Modbus, DNP3, EtherNet/IP communication path restrictions
- Historian and data server hardening — service reduction, access control, network segmentation
- Remote access hardening — VPN configuration, authentication strengthening, session controls
Our 3-Phase Hardening Methodology
01
Baseline Assessment
Document the current configuration of target systems. Identify all enabled services, accounts, protocols, and communication paths — including those that should not exist.
02
Hardening Plan & Approval
Develop a hardening specification against IEC 62443 and NIST SP 800-82. Each change is reviewed against operational requirements before approval.
03
Controlled Implementation & Verification
Implement changes during agreed maintenance windows. Post-hardening functional testing confirms operational processes are unaffected. Hardened baseline documented for future reference.