Question

A black-hat can use Van Eck phreaking to exploit which of the following?

1) Modems
2) Electromagnetic output from CRT and LCD monitors
3) Serial ports
4) Remote Authentication Dial In User Service (RADIUS)

Answer 1

A black-hat can use Van Eck phreaking to exploit the electromagnetic output from CRT and LCD monitors.

Step-by-step explanation:

Computer monitors are designed to emit EM radiation between 400 and 770 terahertz. It is called visible light. Everything in the universe emits EM radiation. Your body emits EM radiation peaking around 30 THz. A black-hat can use Van Eck phreaking to exploit the electromagnetic output from CRT and LCD monitors. Van Eck phreaking is a method of eavesdropping on electronic devices by monitoring the electromagnetic radiation they emit.

By capturing and analyzing this radiation, a hacker can extract information being displayed on a screen, such as login credentials or sensitive data. While modems, serial ports, and Remote Authentication Dial In User Service (RADIUS) are all potential targets for hackers, Van Eck phreaking specifically exploits the electromagnetic emissions of monitors.