Question

Which of the following attacks are associated with network intrusion?
A. Traffic flooding
B. Asymmetric routing
C. Trojan-based attacks
D. Buffer overflow attacks
Choose the correct answer from the options given below:

• A. A, B and C only
• B. A, B and D only
• C. A, B, C and D
• D. B, C and D only

Hint:

Intruders exploit a mix of routing anomalies (Asymmetric routing), protocol vulnerabilities (Traffic flooding), software bugs (Buffer overflow), and social engineering (Trojans) to compromise networks!

Answer 1

The Correct Option is C

Step 1: Understanding the Question:
The question asks to identify which of the listed cyber security threats and routing concepts (A, B, C, D) are associated with network intrusion and security breaches.

Step 2: Core Concepts of Network Intrusion:
Network intrusion is any unauthorized activity or attack on a computer network aimed at compromising network integrity, availability, or confidentiality.

Step 3: Evaluation of the Attack Vectors:
- A. Traffic flooding: Involves overwhelming a network node or server with a massive volume of packets (e.g., DoS/DDoS attacks), disrupting services and crashing systems to force entry or bypass filters. This is a primary intrusion method.
- B. Asymmetric routing: Occurs when packets take one path to a destination and return via a different path. Intruder systems exploit asymmetric routing to evade detection, as security devices (like stateful firewalls) that only see one half of the conversation cannot perform proper session validation. This is widely associated with intrusion evasion.
- C. Trojan-based attacks: Involves tricking users into installing a seemingly benign program that secretly contains malicious code. Once run, Trojans establish a back door, facilitating unauthorized remote access and system control. This is a common intrusion technique.
- D. Buffer overflow attacks: An attacker sends more data to a system memory buffer than it is designed to hold, overwriting adjacent memory spaces. This is used to run malicious commands with administrative privileges, causing a major security compromise.
- Since all four elements are associated with network intrusion techniques and vulnerabilities, they are all correct.

Step 4: Final Answer:
All listed elements (A, B, C, and D) are associated with network intrusion.
Hence, option (C) is the correct choice.