Certified Ethical Hacker (CEH) — Question 89

An attacker uses a communication channel within an operating system that is neither designed nor intended to transfer information. What is the name of the communications channel?

Answer options

• A. Classified
• B. Overt
• C. Encrypted
• D. Covert

Correct answer: D

Explanation

The correct answer is 'Covert' because it refers to hidden channels used for communication without detection. 'Classified' relates to information that is restricted, 'Overt' implies visibility and transparency, and 'Encrypted' refers to data being secured, none of which fit the definition of a channel used secretly.