SCADA Security Testing
Specialized SCADA system security testing with zero-disruption methodology.
SCADA Security Testing
Supervisory Control and Data Acquisition (SCADA) systems form the nerve centre of critical infrastructure — providing real-time monitoring and control of geographically distributed assets across power grids, water utilities, pipelines, and transportation networks. Intelliroot's SCADA security testing methodology is purpose-built for environments where availability is paramount: we apply a zero-disruption framework that delivers comprehensive security analysis without generating a single packet that could affect a live process.
Our SCADA testing engagements examine the full control system stack — from HMI and OPC server security at the supervisory layer, through data historian architecture and SCADA network segmentation, down to communication encryption and authentication controls for remote telemetry. Every finding is presented with OT-specific remediation guidance that accounts for operational constraints, vendor support cycles, and change management requirements unique to industrial environments.
Why SCADA Security Testing Is Critical
SCADA Attacks Have Physical Consequences
Attacks on SCADA systems can cause equipment damage, environmental incidents, and safety hazards. The Stuxnet, BlackEnergy, and Industroyer campaigns demonstrated that well-resourced adversaries specifically target SCADA to cause physical harm.
Remote Access Expanded the Attack Surface
Post-pandemic remote access requirements and vendor connectivity have created persistent remote access paths into SCADA environments that were never subjected to security review — paths that attackers now routinely use to gain initial access.
HMI Vulnerabilities Are Widely Exploited
SCADA HMI platforms running on standard operating systems carry the full CVE vulnerability surface of their underlying OS, frequently unpatched due to vendor support constraints. Attackers use public exploits to pivot from HMIs into the broader OT network.
Regulatory Obligations Require Testing
NCIIPC CII guidelines, CERT-In mandates, and sector-specific regulations for power and petroleum require operators to conduct periodic security testing of SCADA systems. Non-compliance carries penalties and increased regulatory scrutiny.
What We Test
HMI & OPC Server Security
- HMI platform hardening and patch status
- OPC Classic and OPC-UA server security review
- HMI user authentication and privilege levels
- Alarm management and event logging integrity
- Screen lock and physical access controls
Data Historian & Communications
- Historian server security configuration
- Communication encryption for SCADA channels
- Unencrypted telemetry protocol identification
- DNP3 and Modbus authentication assessment
- WAN/satellite link security for remote SCADA
Authentication & Access Control
- Default and shared account enumeration
- Vendor and contractor remote access review
- Privileged account management controls
- Session management for SCADA operator accounts
- Active Directory integration security for SCADA
Network Segmentation & Incident Response
- SCADA network zone and conduit validation
- Firewall rule review for SCADA-facing interfaces
- Safety system isolation and interlock separation
- Incident response plan review for OT environments
- Patch and update management process assessment
Our Testing Approach
Pre-Engagement Safety & Scope Review
Engage control system engineers and HSE personnel to map all safety-critical systems, establish hard limits on active testing, define passive monitoring boundaries, and confirm emergency stop and rollback procedures for the engagement.
Passive Network Monitoring
Deploy passive taps on the SCADA network segment to capture and analyse traffic patterns, identify all communicating assets and protocols, baseline normal operational behaviour, and detect anomalies without generating any probe traffic.
Architecture & Configuration Review
Review SCADA network diagrams, firewall configurations, HMI and historian settings, OPC server configuration, vendor access records, and patch management logs against IEC 62443 security requirements and SCADA-specific security baselines.
Controlled Vulnerability Assessment
Perform targeted vulnerability analysis on identified SCADA components during agreed maintenance windows — focusing on HMI platform vulnerabilities, OPC server exposures, historian access controls, and authentication weaknesses using purpose-built OT tooling.
OT Risk Reporting & Remediation Planning
Present all findings in operational risk terms — quantifying the potential process impact of each vulnerability, mapping to applicable regulations, and providing a prioritised remediation roadmap that respects SCADA change management and vendor support constraints.
Frequently Asked Questions
Deliverables
SCADA Security Assessment Report
Detailed technical findings covering HMI, OPC server, historian, communications, and access control vulnerabilities — each rated in operational risk terms.
SCADA Network Architecture Review
Annotated topology diagram showing zone boundaries, communication paths, and identified gaps in segmentation or safety system isolation.
Passive Monitoring Summary
Asset and protocol inventory derived from passive network monitoring, including undocumented devices, unexpected communication patterns, and protocol risk analysis.
Remediation Roadmap
OT-aware prioritised remediation plan structured around maintenance windows, vendor support constraints, and safety system change management requirements.
CERT-In Compliant Audit Certificate
Signed audit certificate from a CERT-In empanelled organisation confirming scope, methodology, and assessment outcome for regulatory submission.
Request a Security Assessment
Tell us about your environment and security objectives. We'll design a bespoke assessment and deliver a detailed proposal within 48 hours.