An attacker secretly intercepts communication between two Wi-Fi users and relays messages without their knowledge. What is this type of attack?

Question

BlackTom AI · Accepted Answer

To approach this question, I’ll evaluate what each option implies in the context of wireless security.
Option a: MAC spoofing. This involves changing the hardware MAC address to impersonate another device or to bypass access controls. While MAC spoofing can be a precursor to some attacks, it by itself does not describe the act of secretly intercepting and relaying messages between two users. So this is not the best fit for the described scenario.
Option b: Man-in-the-Middle. This term precisely describes a situation where an attacker positions themselves between two communicating parties and secretly relays (and potentially alters) their messages without them knowing. In Wi‑Fi contexts, this is commonly achieved via techniques like ARP spoofing, DNS spoofing, or role as a rogue intermediary, enabling eavesdropping and message manipulation. This matches the described attack characteristics.
Option c: Packet injection. This refers to the attacker injecting forged packets into a communication stream. While packet injection can occur in conjunction with a MITM setup, the description emphasizes relaying messages between two users, which is the hallmark of a Man-in-the-Middle, not merely injecting packets.
Option d: Evil Twin. An Evil Twin attack involves creating a fraudulent access point that mimics a legitimate one to lure users into connecting. While it can enable MITM attacks, the core behavior described—intercepting and relaying messages between two legitimate users—focuses on the intermediary position, not specifically the creation of a fake AP. Therefore, it’s a related technique but not the primary label for the described action.
In summary, the scenario best matches a Man-in-the-Middle attack, where the attacker sits between the two Wi‑Fi users and relays communications without their knowledge, enabling eavesdropping and possible tampering. The other options describe related techniques or components, but they do not fully capture the central MITM behavior as described.

An attacker secretly intercepts communication between two Wi-Fi users and relays messages without their knowledge. What is this type of attack?单项选择题

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