Which of the following is considered a computer file vulnerability?

• A. Emails from friends or family
• B. Unsolicited emails
• C. Shared files
• D. Downloaded files

Answer: (B)

Unsolicited emails are a common way malicious content can reach you, creating a file-related vulnerability because attachments or links in those messages often try to install malware or steal credentials. When you open an unknown attachment or click a shady link, a dangerous file can be downloaded or executed, exposing your system and files to harm. Messages from friends or family are usually trusted sources, even though spoofing can happen; the issue isn’t inherent to those emails. Shared files and downloaded files can pose risks too, but the specific vulnerability highlighted here is the deceptive delivery of harmful content through unsolicited emails, which is a primary method attackers use to introduce malicious files into a system.