Our lives are more interconnected than ever, with everything from televisions to fridges, kettles, cars and even doors and windows now able to be linked together over the internet. Having long since moved on from being just an intriguing concept, the Internet of Things (IoT) is very much here to stay, with devices like Bluetooth headphones and the Amazon Alexa now omnipresent in many people's lives. But while these 'smart' devices are often convenient and fun, they do present a number of concerns regarding security.