What is a critical safety measure before using an unfamiliar external device?

• A. Plugging it in to see if it works
• B. Attempting to find the owner of the device first
• C. Using it for immediate data transfer
• D. Ignoring previous safety concerns

Answer: (B)

Finding the owner of an unfamiliar external device is a critical safety measure that helps ensure the device can be trusted and used safely. By locating the owner, you can gather essential information about the device’s history and functionality. This step is vital to avoid potential risks such as data loss or exposure to malware that could be present on a device of unknown origin.

Checking with the owner allows you to verify that the device operates as intended and to confirm that it is free from viruses or other security threats. Additionally, understanding the device's purpose and previous usage can prevent unintended consequences, such as using a device that may have sensitive or unrecoverable data.

In contrast, plugging the device in without knowledge of its origin could lead to various problems, including damage to your system or data corruption. Immediate data transfer without understanding the device’s capabilities or risks could result in data loss. Ignoring safety concerns entirely dismisses the crucial need for caution, potentially leading to severe consequences. Therefore, seeking to find the owner is the most prudent approach before engaging with an unfamiliar device.