CompTIA Security+ Question H-55

Which of the following is a vulnerability associated with disabling pop-up blockers?

A. An alert message from the administrator may not be visible
B. A form submitted by the user may not open
C. The help window may not be displayed
D. Another browser instance may execute malicious code

Answer: D

Explanation: Pop-up blockers prevent websites from opening new browser windows without the users consent. These are often used for advertisements but can also be used to distribute malicious code.