Description
Key Responsibilities: Responsibilities include but are not limited to:
- Network Architecture & Segmentation
- Define and own secure OT network architecture aligned to IEC 62443 zone and conduit models utilising firewalls and data diodes.
- Establish defense-in-depth architecture across OT, IT/OT DMZ, safety systems and remote access zones.
- Define secure connectivity for OT–IT, OT–Cloud and vendor integrations.
- Review and approve OT network changes for cyber-physical risk impact.
- Integrate identity-aware networking and Zero Trust principles where operationally feasible.
- Oversee firewall rule lifecycle management, including review, validation, documentation and periodic recertification.
- Ensure firewall configurations support deterministic traffic, legacy protocols and high availability requirements in OT environments.
- Remote Access (Internal & Third Party)
- Architect and govern secure remote access solutions for OT environments, including vendor and contractor access.
- Ensure all remote access is identity-based, least-privilege, monitored and auditable.
- Define secure patterns for jump hosts, architectures and privileged session management.
- Enforce segmentation and time-bound access for remote connections to OT assets.
- Align remote access controls with safety, availability and regulatory requirements.
- Establish incident-ready remote access capabilities, including rapid isolation and revocation.
- Identity & Access Management (IAM)
- Define OT-specific IAM architecture and control models aligned with risk tolerance.
- Ability to identify and mitigate potential security risks and vulnerabilities related to identity and access management.
- Govern the use of Active Directory and directory services in OT, including trust relationships and segmentation boundaries.
- Ensure strong authentication (e.g., MFA, certificates) for privileged and remote OT access, adapted to operational constraints.
- Define and oversee Identity Governance & Administration (IGA) processes for OT users, vendors and service accounts.
- Architect and govern Privileged Access Management (PAM) for engineering systems, administrators and service accounts.
- Manage machine and non-human identities, including certificates, keys and service accounts.
- Ensure identity controls support availability, safety and incident response requirements.
- Data Management (Security & Access Focused)
- Define and govern secure OT data flows across zones, conduits and trust boundaries.
- Ensure OT data access is identity-controlled, role-based and least-privilege.
- Design and approve architectures for OT data integration (historians, cloud platforms etc).
- Ensure encryption, integrity and secure transport for OT data in transit.
- Support data classification and risk assessment for safety-critical and regulated OT data.
- Ensure data architectures do not compromise operational availability or safety.
- Crossover Responsibilities
- Translate OT cyber risks into business, safety and operational risk language.
- Support audits, regulatory assessments, and assurance activities related to OT cyber risk.
- Act as a bridge between engineering, operations, IT and security teams.