Introduction
Petrochemical cracking units are critical processing environments where complex industrial systems operate continuously to convert hydrocarbon feedstocks into valuable chemical products. These facilities depend on precise control of temperature, pressure, flow, feed rates, heating systems, and other process conditions. Because many of these operations are automated, the security and reliability of Operational Technology (OT) environments are closely connected to production continuity and process safety.
Louisiana has a significant petrochemical and chemical manufacturing presence, making the protection of industrial control environments particularly important for organizations operating within the state. Modern facilities increasingly connect OT environments with enterprise IT networks, remote monitoring platforms, engineering systems, vendors, and maintenance infrastructure. While these connections can improve visibility and operational efficiency, they can also increase the attack surface. that connecting OT and ICS environments to IT and internet-connected technologies can introduce additional cybersecurity risks. Its guidance emphasizes areas such as asset visibility, access control, network segmentation, monitoring, and configuration management for industrial environments.
An OT Security Assessment helps petrochemical operators understand these risks by examining critical industrial assets, communication pathways, configurations, access controls, and security weaknesses. The objective is to identify vulnerabilities and provide practical recommendations while taking the operational sensitivity of cracking units into account.
Importance of OT Security Assessment for Cracking Units
1. Protecting Critical Industrial Systems
Cracking units may rely on Distributed Control Systems (DCS), Programmable Logic Controllers (PLCs), Safety Instrumented Systems (SIS), Human Machine Interfaces (HMIs), engineering workstations, industrial servers, and network infrastructure.
A weakness in one component can potentially expose connected systems or create unauthorized pathways into the OT environment. An assessment provides greater visibility into these systems and their security dependencies.
2. Identifying IT and OT Connectivity Risks
Modern industrial environments may have communication pathways between enterprise networks and OT systems. Remote support, centralized monitoring, data historians, vendor connections, and engineering activities can create legitimate connectivity requirements.
However, improperly controlled connections may increase exposure. recommends separating OT/ICS environments from corporate networks using layered network protections and restricting communications to essential functions.
An assessment can identify unnecessary communication paths, weak segmentation, exposed services, and inappropriate trust relationships.
3. Securing DCS and Process Control Environments
DCS environments are central to many continuous petrochemical processes. Their security requires attention to system architecture, operator access, engineering access, configurations, communication pathways, and supporting infrastructure.
A security assessment can help determine whether appropriate controls are in place around these critical components without treating OT systems exactly like conventional IT assets.
4. Managing Legacy Technology Risks
Industrial environments may contain legacy operating systems, applications, controllers, and equipment that cannot easily be replaced or patched without affecting production.
Rather than recommending disruptive changes without considering operational requirements, an OT assessment can identify the actual exposure and help determine appropriate compensating controls, segmentation, monitoring, and access restrictions.
5. Strengthening Remote Access Security
Remote access is often important for maintenance and technical support. However, it can become an additional attack pathway when authentication, authorization, segmentation, monitoring, or session management is weak.
Reviewing remote access architecture can help organizations determine whether external connections are appropriately restricted and monitored.
Our OT Security Assessment Methodology
Our Methodology for assessing a petrochemical cracking unit focuses on understanding the industrial environment before performing security validation. Testing is carefully scoped to reduce unnecessary risks to operational systems.
1. Scoping and Planning
The engagement begins by defining the assessment objectives, boundaries, critical systems, testing limitations, operational requirements, and authorized activities.
The scope can include:
OT networks
DCS environments
PLCs
SIS
HMIs
Engineering workstations
OT servers
Industrial firewalls
Remote access infrastructure
Supporting network devices
Cyberintelsys‘ OT Security Testing approach similarly emphasizes pre-engagement scoping, authorized techniques, and minimizing risks to live environments.
2. Asset and Architecture Discovery
The next stage focuses on understanding the OT environment and identifying critical assets and their relationships.
This includes reviewing network architecture, industrial devices, communication pathways, system dependencies, and connections between IT and OT environments.
Asset visibility is an important foundation for OT security because organizations need to understand what systems are present, how they communicate, and which assets require stronger protection.
3. Network Security Assessment
Industrial network architecture is assessed for segmentation weaknesses, unnecessary communication, exposed services, firewall configuration issues, and inappropriate pathways between network zones.
The objective is to determine whether critical systems are adequately separated and whether only necessary communications are permitted.
4. Vulnerability Assessment
Relevant OT assets are evaluated for vulnerabilities, insecure configurations, outdated components, weak authentication, exposed services, and other security weaknesses.
Testing methods are selected according to the sensitivity of the environment. Automated scanning is not treated as the only assessment technique, particularly where aggressive scanning could affect fragile or safety-sensitive systems.
5. Access and Configuration Review
Security configurations and access controls are examined across applicable systems.
Areas may include:
Privileged accounts
User access
Authentication mechanisms
Remote access
Firewall rules
System hardening
Unnecessary services
Logging and monitoring
Change management
It maintaining appropriate access controls, restricting permissions, monitoring OT activity, and maintaining accurate configuration information for industrial systems.
6. Risk Analysis and Reporting
Technical findings are evaluated according to the importance of the affected asset and its potential operational impact.
The final report can document vulnerabilities, affected systems, evidence, risk context, and remediation recommendations. This allows security and operational teams to prioritize improvements based on actual exposure rather than treating every finding equally.
Cyberintelsys OT Security Services
Cyberintelsys offers OT-focused security assessment capabilities covering industrial control environments and their supporting infrastructure. Its OT Security Testing service includes assessment of OT networks, ICS, SCADA systems, PLCs, HMIs, segmentation, legacy systems, protocols, and remote access.
1. OT Vulnerability Assessment
The assessment identifies vulnerabilities and misconfigurations across industrial assets while considering the operational sensitivity of the environment.
Findings can include:
Vulnerable software and components
Insecure configurations
Weak access controls
Exposed services
Legacy system risks
Network segmentation weaknesses
2. OT VAPT
OT VAPT services can combine vulnerability assessment with controlled penetration testing where appropriate.
Testing can help validate whether identified weaknesses could be exploited and whether existing security controls can prevent unauthorized access or movement through the environment.
3. Industrial Network Security Assessment
Network architecture is examined to understand communication between OT zones, industrial devices, enterprise systems, and external connections.
This can help identify weaknesses in:
Network segmentation
Industrial firewalls
Industrial DMZs
Communication pathways
Remote connectivity
Network access controls
4. DCS and PLC Security Assessment
DCS and PLC environments can be reviewed for security weaknesses involving access, configurations, communication, and exposure.
The assessment considers the role these systems play in maintaining stable industrial processes.
5. SIS Security Assessment
Safety Instrumented Systems require careful security consideration because they support safety-related functions. Assessment activities can examine access controls, communication pathways, architecture, and potential exposure while respecting operational constraints.
6. Remote Access Security Assessment
Remote connections used by employees, vendors, engineers, and maintenance personnel can be assessed for authentication, authorization, segmentation, monitoring, and session controls.
Why Choose Cyberintelsys
Cyberintelsys is a CREST-accredited cybersecurity company for Vulnerability Assessment (VA) and Penetration Testing (PT), delivering industry-recognized security testing services for organizations across multiple sectors.
Its OT security capabilities focus on industrial environments rather than applying a purely conventional IT testing model. Cyberintelsys‘ published OT methodology includes scoping, asset identification, network mapping, vulnerability assessment, protocol analysis, controlled exploitation, reporting, remediation support, and retesting.
The approach can help petrochemical organizations:
Understand their OT attack surface
Identify vulnerabilities across critical industrial assets
Evaluate network segmentation
Review remote access pathways
Assess DCS, PLC, SIS, and HMI environments
Prioritize risks according to operational impact
Validate remediation measures
Strengthen overall OT security resilience
Cyberintelsys also maintains dedicated OT Security Testing capabilities for industrial environments.
Contact Cyberintelsys
Petrochemical cracking units require security assessments that recognize the relationship between cybersecurity, operational continuity, reliability, and process safety. A structured OT Security Assessment can help organizations identify vulnerabilities, understand exposure, and establish practical security improvements across critical industrial environments.
For petrochemical facilities operating in Louisiana, strengthening OT security can support better visibility into DCS, PLC, SIS, HMI, network, and remote access risks.
Contact Cyberintelsys to discuss an OT Security Assessment for your petrochemical cracking unit and take practical steps toward strengthening the security of critical industrial operations.
