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Secure Your Industrial IoT Gateways with Advanced Embedded Linux Protection
In today’s high-stakes cybersecurity environment, ensuring industrial IoT devices remain secure is more critical than ever. Discover how Lynx’s expertise in Secure by Design principles protected an industrial manufacturer’s IoT ecosystem, delivering scalable security solutions for factory-installed devices.

Challenge
Protecting IoT Ecosystems from Emerging Threats
An industrial welding equipment manufacturer faced growing concerns about the vulnerability of its IoT-enabled products. The stakes were high: without robust protection, devices installed in customer factories could be exploited, leading to unauthorized access, data breaches, or even counterfeiting. The company’s goal was to secure connectivity between their cloud platform and an IoT gateway built on the Advantech RSB-4411, powered by the NXP i.MX 6 processor and a Yocto BSP.
However, their in-house engineering team needed advanced security expertise to implement a hardened update mechanism and secure device communications. The company turned to Lynx for a comprehensive, long-term security solution.
Solution
Embedded Expertise Meets Advanced Security
Lynx leveraged its expertise in Secure by Design services to deliver a tailored solution, addressing the manufacturer’s concerns and ensuring long-term security. Key measures included:
- High Assurance Boot (HAB): Enabled Secure Boot to ensure that only authorized software could run, eliminating the risk of malicious firmware.
What it means: Customers gain peace of mind knowing their devices are protected from unauthorized modifications. - Filesystem Encryption with dm-crypt: Encrypted the entire filesystem to prevent data theft or counterfeiting, even if the device’s storage was physically compromised.
What it means: Safeguards intellectual property and customer data from malicious actors. - Firmware Update Encryption and Hardening: Protected the update package from unauthorized access and maintained critical user data during system updates.
What it means: Ensures smooth, secure updates without disrupting existing configurations or functionality. - Platform Hardening: Disabled JTAG and serial consoles to prevent unauthorized access and potential exploitation.
What it means: Establishes an impenetrable baseline for device security, reducing operational risks.
Through this collaboration, Lynx not only addressed immediate security challenges but also delivered a scalable foundation for future-proofing the manufacturer’s IoT ecosystem.
Results
Confidently Securing Industrial IoT Innovation
With Lynx’s solution in place, the manufacturer achieved the robust security posture it needed to protect its devices and ensure safe connectivity to the cloud.
- Seamless IoT Gateway Security: Devices remain resilient to unauthorized access, tampering, or exploitation.
- Long-Term Scalability: The solution aligns with future updates and evolving security standards, reducing lifecycle management costs.
- Customer Trust: The manufacturer’s customers gained confidence in the security of their factory-installed equipment, strengthening the brand’s reputation.
Your IoT Devices Deserve Best-in-Class Security
Protect your IoT ecosystem with Lynx’s cutting-edge Secure by Design services. Learn how our advanced embedded security solutions can help you build resilient, scalable systems.