I’m exploring how IoT devices that handle cashless payments, telemetry and remote actions are secured against misuse. In the vending industry, for example, vendekin uses a backend called vNetra that manages live data, machine health, user actions and refunds.
I’m curious about the general security practices people follow for systems like this. Do you isolate the device network, rely on hardened APIs, or use TLS mutual auth?
Any recommended frameworks or certification-level material that covers this?
