Industrial & OT Cybersecurity: protection of PLC, SCADA and BMS systems
The fire alarm system, the BMS and the production line are on the same network as accounting. A ransomware that reaches the offices does not stop at the door of the hall. This is where we put the door.
The systems that keep the building and production running (programmable automation, SCADA, BMS, fire panels, access control, cameras) were designed to work, not to withstand an attack. They run for years without updates, with default passwords, accessible remotely on a "temporarily" open port by the provider. OT cybersecurity it means protecting them without stopping them.
GreenSoft secures your OT infrastructure starting from inventory: what equipment you have, what versions, who accesses it and where. Then we separate the technical network from the office network (IT/OT segmentation), put industrial firewalls between zones, bring remote access from suppliers onto a controlled and recorded channel, harden configurations, back up PLC and controller configurations, centralize logs and track published vulnerabilities for your equipment. Finally, we monitor traffic on the OT network to see anomalies before they become outages.
We do it as an integrator who installs and maintains these systems, not as an external auditor: we know what can and cannot be stopped, when a patch can be made, and which protocols (Modbus, BACnet, KNX, Profinet) must pass through the firewall.
What does the service include?
- OT asset inventory: PLC, HMI, SCADA, BMS, fire and security panels, versions and accesses
- IT/OT segmentation and security zones; industrial firewall with protocol rules (Modbus, BACnet, KNX, Profinet)
- Secure remote access for providers and maintenance: VPN, named accounts, recorded sessions
- Hardening: passwords, unnecessary services, scheduled updates; backup of PLC/SCADA/BMS configurations
- Centralized logging, vulnerability management and OT network monitoring; incident response plan
Why GreenSoft
We install and manage SCADA, BMS, automation, fire and security panels, so we know the equipment we protect and its limits inside out. We are ISO/IEC 27001 certified, and OT measures are documented as part of NIS2 compliance for important and essential entities.
How the project is progressing
- OT inventory and risk assessment, without stopping processes
- Target architecture: zones, firewalls, remote access, backup, logging
- Implementation in stages, with work windows agreed with production
- Monitoring, vulnerability management and periodic review
For what types of goals
- Production halls
- terminals and port operators
- pumping stations and utilities
- buildings with BMS: hotels, offices, hospitals
- photovoltaic parks
- NIS2 entities
Tell us what technical systems you have and who accesses them remotely; you will receive an inventory and a proposed architecture with a quote within 5 business days.
Where we work
We cover the entire county of Constanta — the municipality of Constanta, Mamaia, Năvodari, Ovidiu, Agigea, Eforie, Techirghiol, Mangalia, Medgidia and Cernavodă — including the port perimeter, based on the license to work in the Port of Constanta. For larger works, we travel throughout Dobrogea.
Useful resources
Frequently asked questions
Should production be stopped for segmentation?
No. Segmentation is done in stages, with short agreed windows, and equipment that cannot be updated is protected through isolation and firewall rules, not through risky patches.
My vendors need remote access. How do I secure it?
Through a single point of access with VPN, nominal accounts with limited validity, two-step authentication and logged sessions. The provider works just as easily, you see who entered, when and what they did.
What is configuration backup and why does it matter?
The PLC program and SCADA or BMS configuration are often the only copy in the equipment. We save them periodically, in versioned form, so that in the event of a failure or incident, you can restart within hours, rather than reprogramming from scratch.
Is it mandatory for NIS2?
For essential and important entities, OT systems fall within the scope of the measures required by NIS2: inventory, access control, vulnerability management, continuity. We document OT measures in the same file as IT ones.
Does monitoring mean someone watching 24/7?
It means passive sensors in the OT network that learn normal traffic and alert to anomalies (a new device, an unusual command, a scan). The alerts reach our team and you, with an established response procedure.
Shall we discuss your project?
Free initial technical consultation and quote within 3–5 business days.
