Security Architecture Best Practices - Part 2
Wednesday, July 15, 2026
Modern terminal automation environments are more connected than ever. Refined products and chemical bulk storage terminals regularly exchange data with ERP systems, accounting platforms, inventory management software, reporting tools, and remote support services. While this connectivity improves efficiency and visibility, it also increases the importance of cybersecurity.
The most secure terminal operations do not depend on a single technology or software feature. Instead, they rely on a layered security architecture that combines network design, access controls, operational policies, monitoring, and recovery planning. By adopting a defense-in-depth approach, terminal operators can reduce risk while maintaining the performance and reliability their operations depend on.
Why Security Must Be Designed Into Terminal Automation
Terminal automation systems play a critical role in controlling product movement, managing transactions, and supporting safe loading operations. As these systems become integrated with enterprise networks and business applications, security can no longer be treated as an afterthought.
A security incident at a bulk liquid terminal can have consequences far beyond the IT department. Operational disruptions may delay shipments, affect customer service, impact revenue, or create compliance challenges. In some cases, downtime can also impact safety-sensitive processes.
For this reason, security should be considered during system planning, deployment, and ongoing operations.
Principle #1: Separate IT and OT Environments
One of the most important practices in industrial environments is maintaining clear separation between Information Technology (IT) and Operational Technology (OT) systems.
Corporate networks typically support email, business applications, and internet-connected services. OT environments, on the other hand, are focused on controlling operational processes and maintaining system reliability.
When these environments are not properly segmented, a security issue affecting one area can potentially impact the other. Network segmentation helps reduce this risk by creating controlled communication pathways between business and operational systems. Best practices include:
- Using firewalls to separate network zones
- Establishing industrial DMZs where appropriate
- Documenting approved communication paths
- Limiting unnecessary connections between systems
- Regularly reviewing network architecture
Effective segmentation helps organizations reduce exposure while maintaining the necessary flow of operational data.
Principle #2: Establish Strong Access Control Policies
Not every user requires access to every area of a terminal automation system.
Access control should be based on job responsibilities and operational requirements. This concept, often referred to as the principle of least privilege, helps ensure users receive only the permissions necessary to perform their duties.
Typical user groups may include:
- Terminal operators
- Supervisors
- Customer service, finance or marketing personnel
- Maintenance personnel
- System administrators
- Third-party support personnel
A role-based approach improves accountability while reducing the likelihood of accidental or unauthorized changes. Organizations should also establish formal processes for the following:
- User account creation
- Permission reviews
- Access modifications
- Employee role changes
- Account removal when personnel leave the organization
Strong access governance supports both operational security and regulatory compliance efforts.
Principle #3: Secure System Integrations and Data Flows
Today's terminals rarely operate as standalone environments. Data often moves between the terminal automation system and multiple business platforms. Common integrations include:
- ERP systems
- Inventory management applications
- Accounting platforms
- SCADA systems
- Business intelligence tools
- Cloud-based reporting solutions
Each connection introduces potential security considerations.
Organizations should evaluate how information is exchanged between systems and ensure appropriate safeguards are in place. Security measures may include encrypted communications, controlled interfaces, application authentication mechanisms, and validation of data entering the system. A secure integration strategy protects operational data while supporting efficient business processes.
Principle #4: Control and Monitor Remote Access
Remote access can provide substantial operational benefits, including faster technical support, system maintenance, and troubleshooting. However, unmanaged remote connections can also increase risk.
Organizations should establish clear procedures governing how remote access is granted, monitored, and documented. Recommended practices include:
- Using approved remote access technologies
- Requiring formal authorization procedures
- Limiting access to approved personnel
- Implementing session logging where appropriate
- Restricting access to necessary time periods
- Reviewing remote access activity regularly
The goal is not to eliminate remote access but to ensure it is governed appropriately within the organization's overall security framework.
Principle #5: Maintain Visibility Through Logging and Monitoring
Security cannot be effectively managed without visibility.
Comprehensive logging and monitoring provide valuable insight into both operational activity and potential security events. Audit trails can help organizations understand who accessed the system, what changes were made, and when specific activities occurred. Useful information to capture may include:
- User login activity
- System configuration changes
- Product transactions
- Alarm events
- Administrative actions
- Support and maintenance activities
Monitoring not only supports cybersecurity objectives but can also improve troubleshooting, operational analysis, and compliance reporting.
Organizations that maintain detailed records are often better positioned to identify anomalies and respond more effectively when issues arise.
Principle #6: Design for Reliability, Resilience, and Recovery
Even the strongest security program cannot guarantee that disruptions will never occur.
For this reason, resilience should be a core component of terminal automation architecture.
A resilient environment focuses on the ability to continue operations and recover quickly if systems experience outages, cyber incidents, hardware failures, or communication disruptions. Key considerations include:
- Backup strategies
- Disaster recovery planning
- System redundancy
- Recovery testing
- Data retention policies
- Business continuity planning
Organizations should regularly evaluate how quickly critical operations can be restored and whether recovery procedures have been tested under realistic conditions.
Recovery planning is often overlooked, but it remains one of the most important elements of a comprehensive security strategy.
Principle #7: Build Security Into Every Automation Project
Security is most effective when it is incorporated during project planning rather than added after implementation.
Whether deploying a new terminal automation system or upgrading existing infrastructure, organizations should address security requirements early in the project lifecycle. A security-focused project approach typically includes:
- Risk Assessment. Identify operational, technical, and business risks that could affect the environment.
- Network Design Review. Define how systems will communicate and where segmentation controls should be applied.
- Access Control Strategy. Establish user roles, responsibilities, and governance procedures.
- Integration Review. Assess how external systems will connect and exchange data.
- Monitoring Requirements. Determine logging, reporting, and visibility requirements.
- Recovery Planning. Develop backup, restoration, and continuity procedures before deployment.
By addressing these areas early, organizations can avoid costly redesigns and improve long-term security outcomes.
Common Security Challenges in Terminal Operations
While every terminal is different, several challenges appear consistently across bulk liquid operations. These often include:
- Flat network architectures
- Excessive user permissions
- Poorly documented system configurations
- Uncontrolled remote access practices
- Limited audit trail visibility
- Inadequate backup and recovery planning
- Infrequent security reviews
Addressing these issues typically delivers greater security benefits than focusing on any single technology or feature.
Security Requirements Vary by Organization
There is no universal security model that applies equally to every terminal operation.
Factors such as regulatory requirements, corporate cybersecurity policies, operational risk tolerance, and business objectives often influence security architecture decisions. Depending on their specific requirements, organizations may choose to implement additional controls such as:
- Centralized identity management
- Enhanced authentication controls
- Privileged access management solutions
- Security information and event management (SIEM) platforms
- Network access control technologies
- Advanced security monitoring tools
The most effective security strategy is one that aligns with both operational requirements and organizational risk management objectives.
Supporting Secure Terminal Operations
Technology is only one component of a successful security strategy, but the terminal automation platform plays an important role in supporting broader cybersecurity objectives.
When evaluating terminal automation solutions, organizations should look for systems that help enforce access controls, support secure integrations, provide operational visibility, and fit within established IT and OT security architectures. For example, modern terminal management platforms should support capabilities such as:
- Role-based user permissions that align access with job responsibilities
- Detailed audit trails and transaction histories
- Secure integration with ERP, accounting, and SCADA systems
- Centralized management of master data, allocation controls and inventory reporting
- Reliable system performance and recovery options
- Flexible deployment architectures that support organizational security requirements
Toptech's TMS7 Terminal Management System was designed with these operational and security considerations in mind. The platform provides a secure web-based environment for managing terminal operations, stock accounting, allocations, and load rack activities while supporting integration with enterprise business systems and operational technologies. TMS7 also supports role-based access control, audit logging, Active Directory and OAuth2 integration, and secure API connectivity, helping organizations incorporate terminal automation into their broader security programs.
Most importantly, terminal operators should view cybersecurity as a shared responsibility between technology, network architecture, operational procedures, and personnel. Selecting a terminal automation platform that supports these principles can help create a more resilient and secure operating environment while maintaining the efficiency bulk liquid facilities require.
Conclusion
Cybersecurity in terminal automation is not defined by a single feature or technology. It is the result of a layered approach that combines network segmentation, controlled access, secure integrations, operational visibility, and recovery planning.
As terminal operations continue to become more connected, organizations that prioritize security architecture during planning, deployment, and ongoing operations will be better equipped to protect critical assets, maintain business continuity, and support long-term growth.
Toptech Systems has worked with over 1,200 customers worldwide. To find out more about TMS7 and for a demo, contact us.
Frequently Asked Questions (FAQs)
What is terminal automation security architecture?
Terminal automation security architecture is the combination of network design, access controls, integration security, monitoring, and recovery planning used to protect terminal operations.
Why should IT and OT networks be separated?
Network segmentation helps reduce risk by limiting unnecessary communication between business systems and operational control environments.
How can remote support be secured in terminal environments?
Remote access should be governed through approved technologies, documented procedures, access controls, and monitoring practices.
What security controls are most important for terminal automation?
Key controls typically include network segmentation, role-based access management, secure integrations, logging, monitoring, and disaster recovery planning.
How should terminal automation platforms connect to ERP systems?
Integrations should use controlled communication paths, encrypted data exchanges, and appropriate interface security measures.
What cybersecurity risks affect fuel and chemical terminals?
Common risks include insufficient network segmentation, excessive user permissions, unmanaged remote access, inadequate monitoring, and weak recovery planning.
Toptech Systems is a proud member of the global IDEX family which is recognized as the premier provider of Fluid and Metering Technologies, Health and Science Technologies, Fire and Safety Products, and Dispensing Equipment.
ABOUT US
MARKETS
PRODUCTS
Toptech Systems, Inc.
1124 Florida Central Pkwy
Longwood, Florida 32750
+1 (407) 332-1774
Toptech Systems NV
Nieuwe Weg 1 – Haven 1053
B-2070 Zwijndrecht / Belgium
+32 (0)3 250 60 60