Which of the following tactics might allow a perpetrator to gain a lot of information from a device?

Bluesnarfing is a tactic used to gain unauthorized access to information from a Bluetooth-enabled device. This technique allows a perpetrator to access data such as contacts, calendars, and messages without the owner’s consent. The attack primarily exploits vulnerabilities in Bluetooth protocols, enabling attackers to extract sensitive information without needing physical access to the device.

This makes bluesnarfing particularly effective for accessing a significant amount of data quickly and stealthily, especially when the Bluetooth connection is left unsecured or when the victim is unaware of the connection being established. By leveraging the lack of adequate security measures in Bluetooth communications, an attacker can easily harvest information that may be critical for further exploitation or for gaining other accesses into networks.

The other tactics listed may allow for information gathering, but they have different focuses or mechanisms. For example, packet sniffing primarily involves capturing data packets being transmitted over a network, which might not yield immediate data from a specific device. Phishing involves tricking users into revealing sensitive information, often requiring user interaction, while keylogging records keystrokes to capture entered data, which may not always provide comprehensive access to device data in a single sweep like bluesnarfing does.