In which of the following attacks does an attacker intercept call-signaling SIP message traffic and masquerade as the calling party to the called party and vice-versa?
A.
Call tampering
B.
Man-in-the-middle
C.
Eavesdropping
D.
Denial of Service
Explanation:
VoIP is more vulnerable to man-in-the-middle attacks. In the man-in-the-middle attack, the attacker intercepts call-signaling SIP message traffic and masquerades as the calling party to the called party, and vice-versa. The attacker can hijack calls via a redirection server after gaining this position.Answer option A is incorrect. Call tampering involves tampering a phone call in progress. Answer option D is incorrect. DoS attacks occur by flooding a target with unnecessary SIP call- signaling messages. It degrades the service and causes calls to drop prematurely and halts call processing.
Answer option C is incorrect. In eavesdropping, hackers steal credentials and other information.