Operational Technology (OT) & ICS Security
Logiq supports organisations in securing OT & ICS environments through risk management, secure architecture and independent assurance tailored to live, safety-critical systems. We translate cyber risk into operational terms, aligning security controls with safety obligations and regulatory expectations. Assurance is embedded into engineering workflows, rather than layered on as compliance after the fact.
We support organisations where OT systems are under increasing scrutiny – whether through regulatory pressure, system change, or growing IT/OT connectivity.
OT Risk Management & Safety Integration
Operational Technology risk cannot be separated from safety. In CNI environments, cyber threats have physical consequences, and risk models must reflect this reality.
Logiq aligns cyber risk with, and where appropriate informs, established safety methodologies, ensuring that threats are understood in terms of operational impact, safeguards and recovery. This allows risk decisions to be made in a way that is both technically sound and operationally meaningful.
We define and assure organisations, identifying, assessing and managing OT cyber risk in a way that reflects real-world system behaviour and safety obligations.
- Integration of cyber risk with safety case methodologies (HAZOP, LOPA)
- Threat modelling aligned to operational hazards and safeguards
- Risk assessments grounded in how systems actually operate
- Prioritisation based on safety, availability and continuity impact
- Clear articulation of risk for operational and executive stakeholders
Secure OT Architecture & Segmentation
OT environments require architecture that can be implemented safely in live, often fragile, estates. Security controls must reduce exposure without introducing operational risk.
We design and support the implementation of ISA/IEC 62443-aligned architectures, establishing zones and conduits that create clear trust boundaries across OT systems.
Our approach prioritises availability and stability, ensuring that segmentation and control measures are introduced without disrupting operations.
- Design of ISA/IEC 62443-aligned zones and conduits
- Network segmentation for live and brownfield environments
- Secure remote access and third-party connectivity models
- Architecture reviews for legacy and constrained systems
- Implementation guidance aligned to a ‘do no harm’ principle
OT Assurance, Compliance & Regulatory Alignment
In CNI, assurance is about demonstrating that controls are effective in practice, not just documented in policy.
Logiq delivers independent OT assurance aligned to frameworks such as the NCSC Cyber Assessment Framework and the NIS Regulations. We assess how controls operate within live environments, producing evidence that is credible, defensible and suitable for regulatory scrutiny.
- CAF-aligned assessments, including support for government assurance activities such as GovAssure where applicable
- Evidence development aligned to regulatory expectations
- Independent audit and review of OT control effectiveness
- Supply chain and third-party risk assessment
- Structured reporting for regulators, auditors and senior stakeholders
Operational Resilience & Incident Readiness
Cyber incidents in OT environments are operational and safety events. Response capability must reflect the realities of live systems and the constraints of critical infrastructure.
We support organisations in developing and testing their incident response and recovery capability through realistic, scenario-based exercises. This strengthens decision-making, coordination and recovery under pressure.
- OT-specific incident response planning and playbooks
- Scenario-based exercises aligned to safety-critical environments
- Detection and response capability assessments
- Recovery planning focused on operational continuity
- Integration of cyber response with safety and operational teams
Why Logiq?
Logiq operates at the intersection of engineering practice, cyber security and regulatory assurance.
Our work is grounded in operational reality, ensuring that security controls function effectively within live environments and under regulatory scrutiny.
We deliver NCSC-assured consultancy experience across safety-critical sectors, helping organisations strengthen resilience without compromising availability or delivery.
Where we support
We are often engaged in OT environments where:
- systems are long-lived, safety-critical, and difficult to change
- IT and OT networks are becoming more connected
- regulatory expectations (e.g. CAF or sector-specific frameworks) are increasing
- security controls need to be evidenced without impacting operations
- multiple suppliers share responsibility for systems and risk
