Xiarch SCADA & ICS System Security Assessment is a professional security assessment service focused on industrial control systems and SCADA environments. The service is delivered by security consultants who conduct evaluations across various industrial system components including railway systems, electrical utilities, oil refineries, and chemical plants. The assessment methodology covers internal penetration testing on ICS environments, including evaluation of network security resilience at the data link layer, network traffic monitoring and analysis, device and application identification, vulnerable network service detection, access control weakness discovery, password usage review, and network infrastructure security analysis. The service examines whether vulnerabilities could allow attackers to gain unauthorized access to critical ICS components such as SCADA systems and controllers. The assessment also includes source code analysis through static, dynamic, and interactive security testing, detailed design review of embedded devices, assessment of application and system software configurations, and analysis of how known vulnerabilities impact functional security. The service follows a structured methodology that includes scope definition, information gathering using OSINT tools, enumeration, attack and penetration testing, reporting, and discussion with remediation support. Deliverables include comprehensive reports with recommendations for eliminating vulnerabilities and improving overall security posture of SCADA and ICS systems.