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OT Penetration Tester - Wireless Network (GSM/RF Mesh)

gsstech-groupDubai, Dubai, United Arab Emirates
On-site Full-time

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Experience Level

Experience

Qualifications

RequirementsProven experience in OT and Industrial Security. Strong background in wireless communication technologies, specifically GSM and RF Mesh. Familiarity with AMI and Smart Grid systems. Excellent analytical and problem-solving skills. Ability to work collaboratively within a team environment.

About the job

Join our dynamic team at gsstech-group as an experienced OT Penetration Tester specializing in wired and wireless communication networks, with a focus on GSM and RF Mesh technologies in the context of Advanced Metering Infrastructure (AMI) and Smart Grid environments. Your expertise will play a crucial role in assessing the security and reliability of wireless infrastructure.

This position involves conducting thorough evaluations of wireless networks to ensure their robustness against vulnerabilities and performance issues through controlled testing and assessments.

Key Responsibilities

Wireless Network Security Testing

  • Conduct penetration testing and security assessments on RF Mesh and GSM communication networks utilized within operational technology environments.
  • Identify and document vulnerabilities in wireless communication channels, authentication methods, and data transmission protocols.

Functional Input/Output Validation

  • Execute black-box testing by transmitting varied inputs, including meter readings and commands, to RF Mesh and GSM systems.
  • Validate responses from the system, such as acknowledgments and error messages.
  • Assess DLMS/COSEM protocol communication for accurate metering data transmission.
  • Test communication using Wireless M-Bus for sub-metering and IoT applications.

Network Resilience & Interference Testing

  • Simulate environmental disruptions, such as:
    • Signal jamming
    • Node failures
    • Network congestion
  • Evaluate recovery mechanisms and data integrity in RF Mesh multi-hop networks and GSM infrastructures.
  • Assess network performance across various frequency bands, including 902-928 MHz for large-scale AMI deployments.

Data Transmission Security & Protocol Compliance

  • Examine encrypted DLMS communication within RF Mesh and GSM networks.
  • Identify vulnerabilities in authentication, integrity validation, and protocol execution.
  • Ensure compliance with Wireless M-Bus communication standards, particularly in the 868 MHz frequency band used for low-power metering devices.

Performance & Scalability Testing

  • Conduct stress testing and load simulations to mimic peak AMI usage scenarios.
  • Analyze network behavior during simultaneous communications involving thousands of smart meters.
  • Evaluate latency, throughput, and scalability in both event-driven and scheduled data transmission environments.

About gsstech-group

gsstech-group is dedicated to enhancing the security and performance of advanced technology infrastructures. We specialize in providing cutting-edge solutions for operational technology, ensuring our clients' systems are resilient and secure.

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