OT/SCADA Security Testing for Critical Infrastructure and IndustrialEnvironments

No. Our assessments are specifically engineered to be non-intrusive to live production environments. We use passive network analysis techniques wherever possible, coordinate all active testing within pre-approved maintenance windows, and maintain real-time communication with your plant operations team. In hundreds of industrial engagements, we have maintained a zero production disruption record.

We assess all major industrial communication protocols including Modbus TCP and RTU, DNP3, OPC UA, PROFINET, EtherNet/IP, BACnet, and IEC 61850. Our team evaluates these protocols for authentication weaknesses, replay attack vulnerabilities, command injection risks, and unencrypted data transmission. Protocol-specific testing is tailored to your industrial environment.

OT penetration testing requires fundamentally different techniques and safety considerations. Industrial control systems prioritize availability over confidentiality, use specialized protocols not found in IT environments, and often run legacy firmware that cannot be patched easily. Our methodology accounts for these constraints by using non-intrusive techniques, coordinating with operations teams, and focusing on attack paths that cross IT/OT boundaries rather than testing production controllers aggressively.

It depends on the assessment scope. Remote assessments can cover IT/OT boundary controls, network segmentation, remote access security, and externally facing industrial interfaces. For comprehensive assessments that include field device evaluation, wireless network testing, and physical security controls, on-site access is recommended. We work with your team to determine the optimal approach.

A typical OT/SCADA assessment ranges from two to four weeks depending on the size and complexity of your industrial environment. Factors include the number of sites, network zones, ICS protocols in use, and the scope of IT/OT convergence testing. We provide a detailed timeline during the scoping phase, coordinated with your plant operations and maintenance schedules.

Our OT security assessments align with IEC 62443 for industrial automation security, NIST SP 800-82 for ICS security guidance, CERT-In critical infrastructure audit requirements, and ISO 27001/27019 for energy sector controls. We are CERT-In empanelled since 2008 and can issue certificates required for regulatory compliance of critical infrastructure systems.

Yes. IT/OT convergence attack path analysis is a core component of our methodology. We use red team techniques to trace realistic attack chains from enterprise IT environments — through VPNs, shared services, Active Directory, and poorly segmented firewall rules — into operational technology networks. This identifies the complete path an attacker would follow, not just isolated vulnerabilities.

Security Brigade conducts hundreds of security engagements annually with India's largest manufacturing conglomerates including Hindalco, Grasim, Voltas, Asian Paints, and Larsen and Toubro. We are CERT-In empanelled since 2008 for critical infrastructure audits, have deep expertise in ICS protocols, and deliver assessments through our Lemon platform with L1/L2/L3 expert review. The Aditya Birla Group maintains a group-level rate contract with us for security assessments across all subsidiaries.

Legacy systems are common in OT environments, and our remediation guidance accounts for this reality. Where patching is not possible, we recommend compensating controls such as network micro-segmentation, protocol-level monitoring, access control hardening, and virtual patching through industrial-aware firewalls. Our remediation roadmap is prioritized by risk and feasibility, not just severity scores.

Our primary service is structured assessment, but we offer ShadowMap, our external attack surface management platform, for continuous monitoring of internet-facing industrial assets, exposed services, dark web credential leaks, and domain security. For internal OT network monitoring, we can advise on architecture and tool selection based on assessment findings.