Johann L.

Strategic & Operational CISO | Cybersecurity & IEC 62443 Expert (Industry)

I am an IT/OT cybersecurity expert, working with SMEs, mid-sized companies, and industrial sites to structure, manage, and operate a robust security strategy compliant with major frameworks, notably IEC 62443, NIS2, DORA, and ISO 27001. My approach combines strategic vision, technical mastery, and operational execution.

My missions:

• Development and management of integrated cybersecurity strategies (maturity, governance, roadmap, regulatory compliance).

• Implementation of IEC 62443 best practices: segmentation, zones & conduits, equipment hardening, access management, secure OT architecture, SL requirements.

• IT/OT audits, industrial asset mapping, SCADA/PLC/IIoT architecture review, operational risk management.

• Operational management: security monitoring, SOC/CSIRT coordination, IT/OT incident management, industrial cyber crisis management.

• Implementation and optimization of technical measures: EDR/XDR, SIEM, IAM/PAM, network filtering, OT detection, bastions, cloud solutions.

• Vulnerability management on IT, OT, and IoT environments; prioritization and remediation plan with maintenance/production teams.

• Infrastructure strengthening: Zero Trust, system hardening, network segmentation, cloud security, critical infrastructure.

• OT/IT team awareness training, procedures, playbooks, documentation, definition of security indicators and EXCOM reporting.

Added value:

• Dual Strategy + Operational expertise, adapted to hybrid IT/OT industrial environments.

• Mastery of key frameworks: IEC 62443, NIS2, ISO 27001, DORA.

• Flexible engagement: part-time, ad-hoc mission, CISO support