In context of network security, match the following – Column – I (P)…
2022
In context of network security, match the following – Column – I (P) Fabrication (Q) Modification (R) Interception Column – II 1.Message confidentiality 2.Message integrity 3.Authentication
- A.
P-1, Q-3, R-2
- B.
P-2, Q-1, R-3
- C.
P-3, Q-1, R-2
- D.
P-3, Q-2, R-1
Attempted by 292 students.
Show answer & explanation
Correct answer: D
Concept
A security attack is classified by which security goal it breaks. Three core goals are: Confidentiality (keeping data secret from unauthorized parties), Integrity (data is not altered in transit), and Authentication (a message truly comes from its claimed source). Each classic active/passive attack targets exactly one of these.
Interception — an attacker secretly reads/copies data they are not allowed to see. Nothing is changed; secrecy is lost. This is an attack on confidentiality.
Modification — an attacker alters genuine data in transit, so the received content differs from what was sent. This is an attack on integrity.
Fabrication — an attacker injects counterfeit data while posing as a legitimate source (e.g. a forged message/identity). This defeats the receiver's ability to trust the origin — an attack on authentication.
Application — building the match
Attack (Column I) | What the attacker does | Goal broken (Column II) |
|---|---|---|
Fabrication (P) | Injects fake message / forges identity | Authentication (3) |
Modification (Q) | Alters genuine data in transit | Integrity (2) |
Interception (R) | Secretly reads data, no change | Confidentiality (1) |
So the mapping is P-3, Q-2, R-1.
Cross-check
Read it the other way to confirm each goal is claimed exactly once: Confidentiality is the secrecy goal, defeated only by reading data without changing it (Interception, R-1); Integrity is the no-tampering goal, defeated only by changing data (Modification, Q-2); Authentication is the trust-the-origin goal, defeated by injecting forged content (Fabrication, P-3). Every attack maps to a distinct goal, which matches P-3, Q-2, R-1.