Making IoT secure is essential, but non-trivial. Have you ever wondered how to secure the communication of an IoT device with a cloud server with all the „hops“ in between?
Than this white paper might be a good read for you: Security Scan Methodology for Cloud Connected IoT Devices from Nokia Bell Labs and other partners of SCOTT, see https://scottproject.eu/download/whitepaper-security-scan-methodology-for-cloud-connected-iot-devices/