That’s where people can become understandably concerned. Habits that might once have been mundane – from cleaning to writing a grocery list or choosing a music playlist – are now being sent into the cloud through a tap of an app or a voice command. The reality is that every piece of connected tech in our homes represents a potential doorway to data interception and unauthorised access. But behind the scenes, an assortment of clever tech keeps all our devices safe from these security risks, and it begins with Cryptographically Secure Pseudo-Random Number Generator (CSPRNG) technology.
It’s a mathematical system that generates unguessable keys. It’s the same algorithm that randomises the reels when you play Even Bigger Bananas 2 slot online or other popular games that run on random number generation as well as issues a one-time passcode to access online banking. Before the door camera streams a live feed or a smart bulb is dimmed, the CSPRNG creates temporary cryptographic numbers known as 'session keys' or 'nonces'.
During the initial Wi-Fi handshake – which, in simple terms, means the encrypted connection between your device and a password-protected router – the algorithm works by scrambling the information passed between them, making it impossible to read by outsiders. Each time devices connect over a home’s network, new keys are generated, making them impossible to copy and reuse.
A Multi-Layered Security System
CSPRNG is only part of the system that goes into ensuring our smart tech is secure. Hardware built into devices adds another layer of protection. Many devices come with a dedicated security chip that acts like a digital vault, storing sensitive information like passwords and fingerprint data. They’re engineered in a way that isolates them from the main processor, with their own locked memory. Even if there is a software security breach, the secret keys contained within the chip are safe.
You’ll also be familiar with devices, from Ring Spotlight cameras to Amazon Echoes, notifying you when they need updating. There’s a good reason for this. Often, updates include manufacturer improvements to the security system, usually after identifying new risks. On applying them, your smart tech carries out another piece of clever detection work. It checks that the digital signature associated with the update is the official one issued by the manufacturer. If it isn’t, it’ll be rejected.
Wi-Fi routers also give us another tool to use. Smart gadgets like Philips Hue smart bulbs or Apple HomePod speakers can be put on a separate guest network. That way, simple gadgets run smoothly on their own line. This keeps personal laptops, phones and private files on their own isolated connection, completely tucked away.
The Clever Tech Behind The Scenes
From mathematical algorithms and isolated hardware to Wi-Fi optimisation and verified software updates, the smart tech in our homes is protected by the combined efforts of a series of security measures that work continuously behind the scenes. As modern conveniences are increasingly being handled by connected devices, we have the peace of mind that there’s a sophisticated invisible shield keeping them secure.