Certified Ethical Hacker (CEH v11) — Question 26

Which of the following is an extremely common IDS evasion technique in the web world?

Answer options

• A. Spyware
• B. Subnetting
• C. Unicode Characters
• D. Port Knocking

Correct answer: C

Explanation

Unicode Characters are often used to obfuscate malicious payloads, making them harder for Intrusion Detection Systems (IDS) to detect. In contrast, Spyware, Subnetting, and Port Knocking do not typically serve as evasion techniques for IDS in the same way, as they relate to different security contexts or network configurations.