The average smart home now contains over 20 connected devices, each representing a potential entry point. This 2026 IoT security guide provides a comprehensive strategy. Start by auditing every connected device — your smart TV, thermostat, doorbell camera, voice assistant, and smart lightbulbs are all potential attack vectors. Change all default passwords immediately using unique strong passwords for each device. Create a separate guest Wi-Fi network exclusively for IoT devices. Enable automatic updates on all devices. Router security is foundational — ensure your router runs the latest firmware, disable WPS, use WPA3. Monitor your network traffic using Fing. Consider smart home hubs with built-in security monitoring. This guide covers both technical solutions and operational practices.