Internet of Things (IoT) Practice Exam

Which device is often targeted for attacks within an IoT system?

1. Sensor

2. Actuator

3. Gateway

4. Cloud Server

The correct answer is: Gateway

In the context of IoT systems, the gateway functions as a critical component that connects devices and sensors to the broader internet or cloud services. This device is often a focal point for attacks because it is responsible for managing data transfer and communication between multiple IoT devices and external networks. When an attacker targets the gateway, they may gain access to multiple connected devices, potentially compromising the entire network. The vulnerability of the gateway arises from its connectivity and its role in translating protocols or managing data security. If an attacker successfully infiltrates the gateway, they could manipulate data flows, exfiltrate sensitive information, or even take control of the devices connected to it. This central position makes it a more valuable target compared to individual sensors or actuators, which usually have more limited functions and are not as central to network management. On the other hand, while sensors and actuators play essential roles in collecting data and performing actions in an IoT ecosystem, they often have less processing power and may not have exposed interfaces as robust as gateways. Cloud servers also tend to have extensive security measures in place and are frequently monitored for suspicious activities, making direct attacks on them less common compared to targeting the gateway.