Industry: Manufacturing & Distribution
Service: Professional Services
Location: Americas
Organization Type: Private
Employees: 51-200
Dedicated IT Staff: 3
Needs And Requirements:
To strengthen resilience against evolving cyber threats targeting critical infrastructure, the organization sought to assess and validate its cybersecurity posture within its Operational Technology (OT) environments. The objective was to simulate realistic attack scenarios on water treatment systems, evaluate detection and response capabilities, and ensure that both technical teams and leadership could effectively manage and contain high-impact incidents. In addition, the client aimed to foster a strong culture of cybersecurity awareness across multiple operational regions while identifying actionable improvements to reduce operational and safety risks.
Main Challenges:
Limited Visibility into OT Threat Scenarios: The Organization lacked a clear understanding of how advanced cyberattacks could impact critical water treatment processes.
Unvalidated Incident Response Readiness: Existing response plans and decision-making processes had not been tested against realistic, high-risk cyber scenarios.
Complex, Distributed OT Environments: Multiple operational sites with distinct infrastructures increased the difficulty of ensuring consistent security posture and response capabilities.
Solution:
Penetration Testing: Hitachi Cyber conducted objective-based penetration testing across the client’s OT environments, simulating a real-world attacker operating from an assumed breach position. The assessment included reconnaissance, lateral movement, privilege escalation, and the compromise of critical industrial control systems, demonstrating how an attacker could manipulate water treatment processes and impact operations. This phase provided a realistic view of exploitable weaknesses and their potential consequences within the environment.
Cyber Resilience & Incident Response: Building on the penetration testing findings, Hitachi Cyber designed and facilitated tailored tabletop exercises that immersed both technical and executive teams in realistic cyber crisis scenarios. These simulations enabled the organization to validate incident response procedures, escalation mechanisms, communication strategies, and decision-making under pressure. This approach delivered actionable insights, strengthened operational readiness, and fostered a culture of cybersecurity awareness across all regions.
Outcomes:
The engagement provided the organization with a clear, practical understanding of its exposure to OT-specific cyber threats and the potential operational consequences of a successful attack. By simulating real-world scenarios, the client was able to identify gaps in detection capabilities, response processes, and cross-team coordination. The tabletop exercises enhanced organizational readiness by validating incident response plans and improving collaboration between technical and executive stakeholders.
As a result, the organization strengthened its cybersecurity posture across regions, improved its ability to detect and respond to sophisticated threats, and increased awareness of cyber risks impacting critical infrastructure operations.
Next Steps:
The organization plans to implement the recommended improvements to enhance OT security controls, refine incident response procedures, and expand cyber resilience testing across additional environments, while continuing to build a strong culture of cybersecurity awareness.
