What is a primary reason IoT devices are exposed to more security threats?

IoT devices are often connected to the broader web, which significantly increases their exposure to security threats. When these devices connect to the internet, they become accessible to potential attackers who can exploit vulnerabilities in the device's software, communication protocols, or the cloud infrastructure to which they connect. The increased attack surface created by web connectivity means that malicious actors can easily target these devices using various techniques, such as remote exploitation or network-based attacks.

While the other factors listed can contribute to security vulnerabilities, the aspect of widespread connectivity to the internet is the primary reason for heightened risk. Physical security and encryption can reduce risks, but if the devices are internet-facing, the potential for exploitation rises dramatically simply due to their online presence.