OT / SCADA Security Testing

OT / SCADA Penetration Testing Services

Real World Security Testing for Operational Technology, Industrial Control Systems, and Critical Infrastructure

Orasec delivers results driven OT and SCADA penetration testing services, identifying vulnerabilities that expose operational technology environments, compromise industrial control systems, and undermine the security of critical infrastructure and industrial operations. We go beyond surface level assessments by combining certified penetration testers, advanced methodologies, and real world attack simulation to uncover security weaknesses that genuinely impact organisations operating industrial control systems, supervisory control and data acquisition platforms, and operational technology networks.

OT and SCADA environments are among the most consequential attack targets in existence. Compromised industrial control systems do not just result in data breaches they create physical consequences including production shutdowns, equipment damage, safety incidents, environmental impact, and disruption to critical infrastructure serving communities and national interests.

Why OT / SCADA Penetration Testing Matters

Operational technology environments were designed for reliability and availability not security. Legacy protocols, air gap erosion, IT and OT network convergence, and remote access expansion have created an expansive and increasingly connected attack surface that sophisticated threat actors actively target. Nation state actors, ransomware operators, and hacktivists consistently target OT and SCADA environments for their operational impact and critical infrastructure dependencies.

Orasec's OT and SCADA penetration testing methodology tests every layer of your operational technology environment from network architecture and remote access controls to engineering workstation security, historian systems, HMI interfaces, and IT/OT boundary controls ensuring your OT security posture is resilient against the real world threats targeting industrial environments today.

The OT / SCADA Attack Surface

IT / OT Network Convergence:

The erosion of air gaps between IT and OT networks creates direct attack paths from corporate environments into operational technology infrastructure. Inadequate IT/OT boundary controls, misconfigured firewalls, and poorly managed network connections between business and operational networks give attackers paths from IT compromise to OT environment access and industrial system manipulation.

Remote Access Infrastructure:

Remote access solutions enabling vendor support, engineering access, and operational monitoring create exploitable entry points into OT environments. Insecure remote desktop implementations, weak VPN configurations, direct vendor connections without adequate controls, and poorly managed remote access credentials give attackers reliable paths into operational technology networks.

Engineering Workstations and HMI Systems:

Engineering workstations and human machine interface systems are high value targets in OT environments. Unpatched operating systems, weak authentication, removable media exposure, and direct connectivity to control systems create paths from workstation compromise to industrial control system manipulation and process interference.

Legacy Protocols and Systems:

OT environments operate legacy industrial protocols including Modbus, DNP3, Profibus, and proprietary vendor protocols designed without authentication or encryption. Unauthenticated protocol commands, lack of message integrity controls, and legacy system vulnerabilities create direct paths to unauthorised control system commands and process manipulation.

Historian and Data Infrastructure:

Historian systems collecting operational data connect OT and IT environments creating bidirectional attack paths between industrial control systems and corporate networks. Misconfigured historian access controls, weak authentication, and excessive data sharing create pivot points between operational and business network environments.

Supply Chain and Vendor Access:

OT environments depend on vendor remote access, third party maintenance connections, and supply chain software updates. Compromised vendor credentials, malicious software updates, and inadequately controlled third party access create indirect attack paths into operational technology environments that bypass direct network security controls.

Our OT / SCADA Penetration Testing Services

OT Network Architecture Review and Assessment:

We assess operational technology network architecture, segmentation controls, IT/OT boundary enforcement, and network visibility for design weaknesses and misconfiguration vulnerabilities that create attack paths between corporate and operational environments.

Remote Access Security Testing:

Our testers evaluate all remote access solutions connecting to OT environments including VPN implementations, remote desktop infrastructure, vendor access portals, and jump server configurations for authentication weaknesses, configuration vulnerabilities, and access control failures that create exploitable entry points into industrial networks.

Engineering Workstation and HMI Penetration Testing:

We assess engineering workstations, HMI systems, and operator interfaces for unpatched vulnerabilities, weak authentication, removable media exposure, and software security weaknesses that create paths from workstation compromise to industrial control system access and process manipulation.

Industrial Protocol Security Assessment:

Our testing evaluates industrial protocol implementations including Modbus, DNP3, Profibus, EtherNet/IP, and OPC for unauthenticated command execution, lack of message integrity controls, and protocol level attack vectors that allow unauthorised interaction with industrial control systems.

IT / OT Boundary Penetration Testing:

We conduct active penetration testing across IT/OT network boundaries simulating an attacker who has compromised corporate IT infrastructure attempting to pivot into operational technology environments through boundary control weaknesses, misconfigured firewall rules, and inadequately protected network connections.

Historian and Data Infrastructure Assessment:

Our testing evaluates historian systems, data historians, and OT data infrastructure for access control weaknesses, authentication vulnerabilities, and bidirectional attack paths that allow compromise to propagate between IT and OT environments through shared data infrastructure.

OT Red Team Operation:

For organisations requiring comprehensive OT security validation, Orasec conducts controlled OT red team operations simulating sophisticated threat actor techniques across operational technology environments from initial IT compromise through IT/OT boundary crossing to OT network access and industrial system interaction without disrupting operational processes.

Our OT / SCADA Penetration Testing Methodology

  1. 1

    OT Environment Reconnaissance and Asset Mapping:

    OT network architecture, connected systems, industrial protocols, remote access infrastructure, IT/OT boundaries, and vendor connections are mapped to establish a complete picture of the operational technology attack surface without disrupting industrial operations.

  2. 2

    Passive Network Analysis:

    Non intrusive passive network monitoring identifies industrial protocols, device communications, network traffic patterns, and potential vulnerabilities across OT environments without generating traffic that could disrupt operational processes or industrial control system behaviour.

  3. 3

    Active Vulnerability Assessment:

    Carefully scoped active assessment identifies vulnerabilities across engineering workstations, HMI systems, historian infrastructure, and network devices using OT safe testing techniques that minimise risk to operational continuity and industrial process stability.

  4. 4

    IT / OT Boundary Testing:

    Active penetration testing across IT/OT network boundaries confirms whether boundary controls effectively prevent lateral movement from corporate IT environments into operational technology networks and industrial control systems.

  5. 5

    Industrial Protocol Testing:

    Industrial protocol implementations are assessed for unauthenticated command execution, integrity control weaknesses, and protocol level vulnerabilities using techniques adapted for OT environments that avoid disruption to live industrial processes.

  6. 6

    Reporting and Remediation Guidance:

    Findings are delivered in a detailed report with risk ranked vulnerabilities mapped to operational impact, exploitation evidence, attack path documentation, and prioritised remediation guidance tailored to OT operational constraints and industrial system lifecycle realities.

What OT / SCADA Penetration Testing Uncovers

  • IT/OT boundary control failures allowing lateral movement from corporate networks into operational environments
  • Remote access vulnerabilities providing direct entry points into OT networks without IT compromise
  • Engineering workstation weaknesses creating paths to industrial control system access and manipulation
  • Unauthenticated industrial protocol command execution enabling unauthorised process interaction
  • Historian and data infrastructure vulnerabilities creating bidirectional IT/OT attack paths
  • Unpatched legacy systems and known exploitable vulnerabilities across OT network infrastructure
  • Weak authentication across HMI systems, engineering workstations, and OT network devices
  • Vendor and third party access control failures creating indirect entry paths into operational environments
  • Network segmentation weaknesses allowing unrestricted lateral movement across OT network zones
  • Detection and monitoring gaps allowing attackers to operate within OT environments undetected

Deliverables from Our OT / SCADA Penetration Testing Services

  • Executive Summary High level OT security risk overview communicating operational impact, key findings, and prioritised security investments for leadership and operational stakeholders

  • OT Security Assessment Report Comprehensive findings documentation covering network architecture, remote access, workstation security, industrial protocols, historian infrastructure, and IT/OT boundary controls

  • IT/OT Boundary Assessment Dedicated findings covering boundary control effectiveness, lateral movement paths from IT to OT environments, and firewall and segmentation weaknesses

  • Industrial Protocol Security Report Protocol level findings covering unauthenticated command execution risks, integrity control weaknesses, and exploitable protocol vulnerabilities across assessed industrial communication standards

  • Remote Access Security Assessment Findings covering remote access infrastructure vulnerabilities, vendor access control weaknesses, and authentication failures across OT remote connectivity

  • Attack Path Mapping Visual documentation of identified attack chains from initial access through IT/OT boundary crossing to industrial control system access and operational impact

  • Remediation Prioritisation Risk ranked recommendations with practical guidance tailored to OT operational constraints, industrial system lifecycle realities, and the unique patching and change management challenges of operational technology environments

  • Retest Verification Validation testing confirming remediation effectiveness across critical OT security findings

Why Organisations Choose Orasec for OT / SCADA Penetration Testing

  • Specialised OT Security Expertise Our testers bring deep expertise in operational technology security, industrial control system architecture, industrial protocol assessment, and IT/OT boundary penetration testing specialised knowledge that IT focused penetration testers do not possess.

  • Operational Safety First OT penetration testing carries unique operational risk. Orasec conducts all OT assessments under strict operational safety protocols using passive analysis, carefully scoped active testing, and OT safe techniques that deliver comprehensive security findings without disrupting industrial processes or operational continuity.

  • OT Specific Methodology Our assessment methodology is purpose built for operational technology environments addressing industrial protocols, legacy system constraints, OT network architecture, and the unique security challenges of environments where availability and safety take precedence over patching cycles.

  • IT and OT Security Integration Orasec assesses both IT and OT security in an integrated engagement identifying the IT/OT boundary weaknesses, corporate network attack paths, and convergence vulnerabilities that create the most consequential risks in modern industrial environments.

  • Full OT Attack Surface Coverage From network architecture and remote access infrastructure to engineering workstations, industrial protocols, historian systems, and vendor access controls, Orasec provides complete OT and SCADA penetration testing coverage across your entire operational technology environment.

  • Actionable Outcomes Every finding is documented with operational impact context, exploitation evidence, and remediation guidance that OT security and operations teams can act on within the unique operational constraints and change management realities of industrial environments.

Get Expert OT / SCADA Penetration Testing

Connect with Orasec's certified testers to assess your operational technology network, industrial control systems, IT/OT boundaries, remote access infrastructure, or SCADA environment. Identify real vulnerabilities before threat actors exploit them.

  • Free 30 minute consultation
  • Custom testing scope and pricing
  • No obligation security review

Frequently Asked Questions