Ethical Hacking Essentials Practice Test

Which of the following countermeasures helps users defend their devices against Bluetooth attacks?

1. Enable discoverable mode

2. Disable automatic connections to public Wi-Fi networks

3. Keep Bluetooth always on

4. Turn off device location services

The correct answer is: Disable automatic connections to public Wi-Fi networks

Disabling automatic connections to public Wi-Fi networks serves as an effective countermeasure against potential interference and security threats, including those that might arise during Bluetooth attacks. When devices automatically connect to public Wi-Fi, they can become vulnerable to various forms of attacks, such as man-in-the-middle attacks, which may also affect Bluetooth connections. By controlling the connectivity settings and ensuring that your device does not automatically join any available network, you help reduce the overall attack surface. This means that potential attackers are less likely to gain unauthorized access to your devices or exploit vulnerabilities that could be leveraged through your established connections. In contrast, enabling discoverable mode increases the visibility of the device to other Bluetooth devices, which can actually facilitate Bluetooth attacks. Keeping Bluetooth always on creates a perpetual vulnerability by allowing device discovery and connections without user intervention. Turning off device location services might enhance privacy in some contexts but does not directly mitigate the risks associated with Bluetooth connectivity.