IoT, or the Internet of Things, refers to the network of physical devices, vehicles, appliances, and other objects embedded with sensors, software, and connectivity capabilities. These devices collect and exchange data over the internet, enabling automation, remote monitoring, and control. IoT is widely used in smart homes, healthcare, manufacturing, and transportation. However, its rapid growth introduces cybersecurity risks, as many IoT devices lack strong security measures, making them vulnerable to hacking, data breaches, and unauthorized access. Ensuring secure communication, regular updates, and strong authentication are essential to protect IoT ecosystems from cyber threats.