The attack surface of a modern industrial organisation spans both enterprise IT and operational technology: the PLCs, SCADA systems, DCS, and IIoT that control physical production. These environments were engineered for reliability — not security. Ransomware reaching an industrial control system can halt production, trigger safety incidents, or cause physical damage. Caveo delivers OT security designed for industrial environments — assessing risk without disrupting operations.
Operational technology systems were designed for reliability and availability, with production continuity as the overriding requirement. Legacy protocols, unpatched systems, flat network architectures, and remote access configurations create an attack surface that enterprise IT security tools were not built to address.
The digital transformation of manufacturing — Industry 4.0, predictive maintenance, remote monitoring, and cloud integration — has connected OT environments to enterprise IT networks and supply chains. The air gap that historically isolated industrial systems no longer exists in most modern facilities.
Ransomware groups specifically target manufacturing because downtime cost is extreme and willingness to pay is higher. OT-specific malware — LockerGoga, TRITON/TRISIS, Industroyer — shows that adversaries have developed tools designed to target industrial control systems, not just general-purpose IT.
Securing an OT environment requires a different methodology from enterprise IT security. Patching cycles are measured in years. Availability requirements mean assessment must be conducted without active exploitation. Proprietary protocols — Modbus, PROFINET, DNP3, EtherNet/IP — require specialised assessment capability.
You cannot secure what you cannot see. OT asset discovery and network mapping is the foundation — building an accurate inventory of every device on the OT network, its communication patterns, and its connections to the IT network. Most organisations discover assets they did not know existed.
OT assessment must not disrupt production. Caveo uses passive monitoring, network traffic analysis, and controlled techniques that identify risk without actively probing production control systems — unlike IT penetration testing which can crash PLCs and SCADA systems if applied to OT without modification.
Security measures that interfere with production will be bypassed or removed by operators. Caveo designs controls that protect OT environments while accommodating the operational constraints of industrial environments — availability always comes first in OT security design.
Structured assessment of your industrial environment: asset inventory, network architecture review, protocol and communication analysis, access control review, and vulnerability identification. Delivered using passive techniques that do not disturb production. Output is a risk register, prioritised remediation roadmap, and architecture recommendations.
Design and implementation of network segmentation between IT and OT layers, between production zones, and between remote access entry points and control networks. Segmentation is the most effective single control for limiting the blast radius of an attack reaching the OT environment.
Assessment and remediation of remote access — VPN, jump servers, remote desktop, and vendor access — that connect the OT network to external parties. Replacement of insecure access with monitored, access-controlled connectivity.
Security architecture review and design for the IT/OT boundary. Covers security zones, DMZ design, data diode implementation where applicable, and the controls required at the IT/OT interface to prevent lateral propagation.
Deployment of passive, OT-protocol-aware network monitoring for continuous visibility into industrial traffic, anomalous communication detection, and indicators of compromise. Integrated with Caveo's managed SOC for 24/7 OT monitoring.
Assessment of your OT environment's resilience to ransomware propagation from the IT layer: segmentation gaps, credential sharing, backup architecture for control system configurations, and recovery procedures. Reduces blast radius and improves recovery time.
Development of an OT security policy framework, incident response procedures specific to industrial environments, and security governance for OT assets — including IEC 62443-aligned programme design where applicable.
Where continuous visibility is required, Caveo's managed SOC extends to OT network monitoring — detecting anomalous industrial traffic patterns, unauthorised access attempts, and indicators of compromise across the IT/OT environment.
| Dimension | Enterprise IT security | OT security requirements |
|---|---|---|
| Patching | Monthly patch cycles standard | Years between patches — many systems never patched |
| Availability | Downtime is inconvenient | Downtime has production, safety, and financial consequences |
| Protocols | TCP/IP, standard applications | Modbus, PROFINET, DNP3, EtherNet/IP, BACnet, OPC UA |
| Asset inventory | Managed through CMDB | Often unknown — discovered for the first time during assessment |
| Testing approach | Active scanning routine | Passive monitoring required — active scanning can crash PLCs and SCADA |
| Security tools | Enterprise EDR, SIEM, firewalls | OT-protocol-aware tools required — IT tools blind to industrial traffic |
| Priority order | Confidentiality ? Integrity ? Availability | Availability first — Safety second — Security third |
OT security reduces the probability and blast radius of a cyber attack reaching production. The cost of a week-long production halt vastly exceeds the cost of a properly designed OT security programme.
Digital transformation — predictive maintenance, cloud integration, remote monitoring — can proceed without connecting IT and OT in ways that expose industrial systems to enterprise-layer threats.
OT assessments and controls support CERT-In directives for critical infrastructure, sector-specific regulations for energy and utilities, and cyber insurance requirements that increasingly mandate OT controls for manufacturing clients.
Proper OT/IT segmentation prevents ransomware that enters through the IT layer from propagating to production control systems — the single most impactful control for limiting the industrial impact of a ransomware attack on a manufacturing organisation.
OT risk assessments produce documentation that allows plant leadership, operations management, and the board to understand industrial cyber risk in terms of production impact, safety consequences, and recovery cost — not abstract security metrics.
A structured five-phase engagement that works around production schedules, not against them.
Caveo works with plant management, IT leadership, and operations to define scope, agree on methodology (passive vs controlled), and plan the engagement to avoid disruption to production schedules and maintenance windows.
Deployment of passive monitoring to discover assets, map communication flows, and identify network architecture — producing an asset inventory typically more complete than any existing CMDB, without touching a single PLC or SCADA system.
Analysis against OT frameworks (IEC 62443, NIST SP 800-82). Identifies segmentation gaps, remote access vulnerabilities, legacy protocol exposure, and IT/OT interface risks with production-context severity ratings.
Delivery of the OT risk assessment report: executive summary, technical findings, risk register, and prioritised roadmap. Caveo presents findings to plant leadership, contextualising each in terms of production and safety impact.
Caveo can support or lead remediation: segmentation design and implementation, secure remote access replacement, OT monitoring deployment, and governance programme development — scoped to your internal capability and timeline.
A 30-minute scoping call establishes your OT environment scope, production constraints, and the highest-risk areas to prioritise.
Book a scoping callDiscrete and process manufacturing — automotive, electronics, food and beverage, pharmaceuticals, chemicals — where production continuity is the primary requirement and OT/IT convergence is accelerating. Manufacturing is the highest-targeted sector for industrial ransomware globally, with downtime costs running into millions per day at scale operations.
Power generation, transmission, and distribution with SCADA systems managing critical infrastructure. Utility operators face regulatory requirements for OT security under critical infrastructure protection frameworks. Grid events initiated through cyber attack represent national-level risk.
Upstream and downstream environments with safety-critical control systems. Petrochemical facilities face OT security risks with potential safety consequences beyond production impact — the TRITON/TRISIS malware specifically targeted safety instrumented systems in this sector.
Municipal water systems managing treatment and distribution via SCADA and PLC systems. Water utilities are increasingly targeted and face specific regulatory security requirements under critical infrastructure protection frameworks.
Any organisation operating critical national infrastructure — as defined by national cybersecurity frameworks in India and Malaysia — with OT environments requires a formal OT security programme aligned to applicable regulations and CERT-In directives.
What is OT security, and how does it differ from IT security?
OT (operational technology) security is the protection of systems that control physical processes — manufacturing equipment, energy infrastructure, industrial automation. Unlike IT security, which protects data and information systems, OT security must prioritise availability (production continuity) and safety above confidentiality. OT environments use different protocols, have different patching constraints, and require different assessment methodologies from enterprise IT.
Can OT security assessments be conducted without disrupting production?
Yes. Caveo uses passive monitoring and network traffic analysis techniques that do not interact with production control systems. Active scanning and exploitation testing — standard in IT penetration testing — are not used in OT environments because they can crash PLCs and SCADA systems. The assessment methodology is agreed with plant management before engagement begins, and all testing is planned around production schedules.
Our factory has never had a cyber incident. Why does OT security matter now?
Many OT environments host adversaries that have been present for months or years without triggering any visible incident. Threat actors conducting reconnaissance, mapping network architecture, or pre-positioning for a future ransomware deployment typically create no operational symptoms. The absence of incidents is not evidence of absence of threats — it is evidence that detection capability is insufficient.
What is the connection between ransomware and OT environments?
Ransomware that encrypts enterprise IT systems frequently propagates to OT environments through IT/OT network connections, shared credentials, or remote access paths. Once ransomware reaches a manufacturing control system, the consequences extend from data loss to production shutdown, equipment damage, and in some cases, safety risks. OT/IT network segmentation is the primary control for preventing this propagation.
What frameworks does Caveo use for OT security assessment?
Caveo's OT security assessments are aligned to IEC 62443 (industrial automation and control system security), NIST SP 800-82 (guide to industrial control systems security), and the NIST Cybersecurity Framework. For regulated sectors, assessments also address CERT-In directives applicable to critical infrastructure and relevant sector-specific frameworks.
We already have IT security controls. Does that cover our OT environment?
Not reliably. Enterprise IT security tools — EDR, SIEM, firewalls — are not designed for OT protocols and often cannot monitor industrial network traffic. OT-specific monitoring tools, segmentation controls, and assessment methodology are required. Caveo's OT security service adds the capability that enterprise IT security tools leave uncovered — including passive asset discovery, OT-protocol-aware network monitoring, and IT/OT convergence architecture review.
Most manufacturing organisations discover their OT risk profile for the first time during a Caveo assessment — not during an incident. An OT risk assessment gives you an accurate picture of your industrial attack surface, the specific paths a ransomware attack would follow, and a prioritised roadmap for closing the highest-risk gaps — without disrupting production.