What type of devices can be easily lost or stolen and may be used for espionage?

Removable devices, such as USB drives and external hard drives, are particularly vulnerable to being lost or stolen due to their small size and portability. These devices can easily be misplaced or taken without the owner's consent, making them a target for espionage. If such a device falls into the wrong hands, it can provide access to sensitive data, including confidential files, personal information, or proprietary corporate data.

The nature of removable devices also allows them to be used for malicious purposes. For instance, an individual could plug a compromised USB device into a secure system to install malware or extract sensitive information without detection. This risk highlights the importance of implementing strong encryption, access controls, and awareness training for employees regarding the handling of removable devices to mitigate the threat of data breaches and espionage.

In contrast, while other options like virtual reality devices, server equipment, and desktop computers may also be valuable for data, their bulkier designs typically make them less easily lost or stolen compared to removable devices, which are specifically designed for mobility.