Example Concept: Implementing secure firmware updates involves using cryptographic techniques to ensure that only authenticated and authorized firmware is installed on IoT devices. This typically includes signing firmware with a private key and verifying it with a public key on the device, encrypting the firmware to prevent unauthorized access, and using secure boot to ensure that the device only runs trusted firmware. Additionally, over-the-air (OTA) update mechanisms should be protected with secure communication protocols like TLS to prevent interception and tampering.