![]() While this standard of communication is useful, security is often neglected to make it easier to configure the devices. Don't Miss: Take Control of Sonos IoT Devices with Python.A mesh network allows groups of IoT devices to pass messages between each other so that all devices have a connection to the internet if even one device in the cluster has a connection back to a Wi-Fi network. This standard is kind of like Twitter for Wi-Fi - short, simple pre-formatted messages that can quickly pass between devices in a mesh network. Internet of Things devices are everywhere, and many of them use lightweight messaging standards like MQTT to communicate over Wi-Fi. IoT Devices Use Vulnerable Messaging to Communicate In most cases, these messages don't require any password to execute, so the Chromecast will react precisely the same if you send it commands directly - without involving the official app. These are usually sent to the Chromecast as the user operates a mobile application with an interface for controlling the device. Media devices like a Chromecast are controlled by simple application programming interfaces (APIs) designed to be controlled by messages from a user's smartphone. A perfect example is the Chromecast, which can be effectively hijacked by any device on the same local network that knows how to talk to it. IoT (Internet of Things) devices are notorious for making compromises on security for the sake of convenience, rendering them particularly easy to attack. With a script called "Cast All the Things," we can hijack a Chromecast to play nearly any kind of media with a single command in terminal. Because of the way Chromecast and other IoT devices communicate, anyone on the same Wi-Fi network as your device can often make it do whatever they want. Giving up your Wi-Fi password can be giving up more control than you think. ![]()
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March 2023
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