Operational Technology (OT) environments—industrial controllers, SCADA networks, IoT, sensors, embedded equipment—have become prime targets for cyberattacks. Historically isolated, these systems are now interconnected with information systems, exposing production lines to major risks: business interruptions, sabotage, theft of sensitive data, or alteration of critical processes.
LOGIQE supports you in securing your OT systems with a rigorous approach tailored to industrial constraints (availability, update constraints, industry standards), while ensuring regulatory compliance (NIS2, ANSSI, ISO 62443, etc.).
What is an OT environment and why is it vulnerable?
- Programmable Logic Controllers (PLC)
- SCADA/HMI systems
- Industrial networks (Modbus, OPC, Profinet, etc.)
- Connected sensors (industrial IoT)
- Systems embedded in critical machines or infrastructure
These systems have several specific vulnerabilities:
- Legacy or unsupported hardware
- Unencrypted protocols, without authentication
- Lack of compatible antivirus or EDR software
- Physical access with little control
- Limited knowledge of OT technologies among IT teams
Our approach to securing your OT environment
Step 1 – Mapping OT assets
Identification of equipment, protocols, network topologies
Inventory of inter-OT and OT–IT flows (North–South/East–West traffic)
Highlighting remote access, supervision stations, weak points
Passive or active scan adapted to your environment
Step 2 – OT Vulnerability and Risk Assessment
Equipment configuration audit (firmware, open ports, etc.)
Network segmentation and logical partitioning tests
Analysis of exposure to ransomware and persistent threats
Detection of vulnerabilities using dedicated tools such as Tenable OT Security or Nozomi Guardian, adapted to industrial environments
Prioritization of risks according to their impact on industrial processes
Step 3 – Implementation of specific protections
Deployment of industrial firewalls (NGFW with L7 filtering)
Separation of IT/OT flows (zones, VLANs, industrial DMZ)
Remote access control (VPN, bastion, MFA)
Passive monitoring via OT IDS/IPS probes (Nozomi Guardian, Sentryo, Dragos, etc.)
Correlation of industrial events via OT-compatible SIEM or Tenable OT, with integration into a centralized log sink (Graylog, Sentinel, etc.)
Recording of OT logs in a SIEM (Graylog, Sentinel, etc.)
P4S: an enhanced protocol for industrial system security
LOGIQE can integrate P4S (Protocol for Secure Supervisory Systems) technology, an emerging standard dedicated to cybersecurity in OT environments. This protocol ensures:
- Strong authentication for industrial equipment
- Encryption of exchanges between controllers and supervisors
- Complete traceability of orders and access
- Resistance to replay or tampering attacks
P4S is particularly suited to sensitive industrial sites where automation safety is crucial, particularly in the energy, healthcare, and water sectors.
Segmentation, monitoring, supervision: the OT security triad
LOGIQE favors a "Defense in Depth" approach , combining:
- Network segmentation: OT flows must not communicate directly with IT or the outside world. Each critical segment is isolated logically or physically.
- Passive monitoring: we integrate OT probes capable of analyzing flows without disrupting the controllers.
- Alerting and traceability: every abnormal action (suspicious command, restart, firmware modification, etc.) is reported for investigation.
OT cybersecurity & regulatory compliance
Protecting industrial environments is no longer just a best practice: it is becoming a regulatory requirement.
- NIS2 Directive (effective in 2024): operators of essential services must ensure the security of their OT systems.
- ANSSI standards : guides for industrial network security, recommendations on passive monitoring, access management, etc.
- ISO/IEC 62443 : reference standard for industrial cybersecurity
- GDPR : some sensors or OT systems collect personal data (e.g., predictive maintenance, access logs)
LOGIQE helps you bring your industrial sites into compliance with clear documentation, a prioritized remediation plan, and support for external audits.
IT/OT integration: security without disrupting production
We know that in an OT environment:
- Stopping production is unthinkable.
- Updates are critical and often impossible to perform on the fly.
- Stability takes precedence over innovation
That is why LOGIQE adapts its approach to ensure:
- Zero service interruption
- Mirror/passive monitoring
- Business validation at every stage
- Maintaining traceability and integrity of industrial data
Case studies: OT security in critical environments
- Food processing plant: OT/IT network segmentation, deployment of industrial firewalls, monitoring via passive probe
- Automotive production site: secure management of remote supplier access, SCADA supervision with no impact on cycles
- Local authority – wastewater treatment plant: audit of PLCs, partitioning, vulnerability analysis, and NIS2 documentation
Why entrust your OT cybersecurity to LOGIQE?
- Dual IT & OT expertise: we talk to both CISOs, CIOs, and automation engineers
- Method compatible with critical environments: guaranteed stability
- Seamless integration with your existing equipment (Siemens, Schneider, Rockwell, etc.)
- Compliance assured (NIS2, ANSSI, ISO 62443, etc.)
- State-of-the-art tools for detection, analysis, and monitoring: passive probes (Nozomi Guardian), OT vulnerability scanner (Tenable OT), industrial-grade SIEM
- Clear reporting for industrial management, CIOs, CISOs, and external auditors
FAQ – OT Cybersecurity
- My OT park is old. Is it compatible with modern protections?
Yes. We use passive monitoring and partitioning techniques that do not require direct updates. - How long does an OT audit take?
Two to four weeks, depending on the site. A quick version can be done in a few days to establish an initial map. - What if my service providers access my machines remotely?
We secure access via bastions, VPN, MFA, and log all actions to prevent any compromise.
Need an OT audit or an industrial security strategy?
LOGIQE offers you a free initial audit of your OT environment to identify vulnerabilities, propose a realistic roadmap, and guide you toward NIS2 compliance.
