Project background
Industrial IoT devices increasingly sit on networks where breach consequences are serious. The client required a communication stack hardened against realistic attacker capabilities, not just checkbox security.
Challenge
Delivering strong security within the constraints of embedded hardware, supporting secure onboarding at scale, and rotating credentials without bricking devices in the field.
Approach & solution
We implemented per-device certificates backed by a hardware root of trust, mutual TLS across the control plane, secure boot, and signed firmware updates. An onboarding flow issues credentials automatically at first boot, and rotation is built in from day one.
Results & benefits
The security model withstands realistic attacker scenarios, and device onboarding is fast enough for mass deployment. Credential rotation has been exercised in the field without incidents.
