Which attack technique involves an attacker intercepting and potentially modifying the communication between two parties without their knowledge?
A Man-in-the-Middle (MitM) attack positions the attacker transparently between two communicating parties, allowing them to intercept, read, and potentially modify all data exchanged without either party being aware. The attacker effectively spoofs the identities of both endpoints, making each believe they are communicating directly with the other. This enables real-time manipulation of the communication stream, making it a highly effective method for data theft or session hijacking.
Why this answer
A man-in-the-middle (MITM) attack is correct because it specifically involves an attacker secretly intercepting and potentially altering communications between two parties who believe they are directly communicating with each other. This is achieved by the attacker inserting themselves into the communication path, often by ARP spoofing, DNS spoofing, or rogue access points, allowing them to capture, decrypt, or modify packets in transit.
Exam trap
The trap here is that candidates often confuse a replay attack with a MITM attack because both involve capturing traffic, but a replay attack only retransmits captured data without real-time interception or modification of the ongoing session.
Why the other options are wrong
A replay attack involves capturing and retransmitting valid data, but it does not inherently intercept or modify live communication between two parties; the attacker typically does not position themselves in the middle of the ongoing session.
Phishing is a social engineering attack that tricks users into revealing sensitive information, not an attack that intercepts or modifies communication between two parties.