Every connected device is an attack surface. The controls that matter most when you roll out sensors and gateways at scale.
Identity first
Give every device a unique, hardware-backed identity and rotate credentials automatically. Shared keys across a fleet turn one compromise into all of them.
Update safely
Signed, staged over-the-air updates with rollback are non-negotiable. A fleet you cannot patch is a liability that grows with every release.
Process at the edge
Filter and act locally for latency and resilience, and send only what the cloud needs. Use open protocols such as MQTT and OPC-UA so you can change vendors, and align the design with IEC 62443.
Working through this in your organisation?
Talk to the team behind our Internet of Things practice about what a practical first step looks like for you.