Which term describes the act of replaying previously captured transmissions to spoof communications?

Which term describes the act of replaying previously captured transmissions to spoof communications?

• A. IoT Hacking Vulnerability Scanning
• B. IoT Hacking Information Gathering
• C. Replay Attack
• D. Cryptanalysis Attack

Answer: (C)

Replaying previously captured transmissions to spoof communications is called a replay attack. In this scenario an attacker captures a legitimate message or handshake and later resends the exact same data, making the receiver treat it as a fresh, valid transaction. This can fool authentication, session setup, or command execution, allowing unauthorized access or actions because the system doesn’t recognize the replay as a duplicate or expired message. Defenses focus on ensuring freshness for every transaction. Use nonces or timestamps, require challenge-response authentication, and employ session tokens or rolling sequence numbers to detect duplicates. Protocols like TLS and WPA3 implement anti-replay protections to prevent these replays. In IoT, adding lightweight replay protection and secure command handling helps shield devices from such abuse. Other terms refer to different activities: vulnerability scanning looks for weaknesses, information gathering collects target data, and cryptanalysis tries to break cryptographic schemes rather than addressing the reuse of old messages.

Replaying previously captured transmissions to spoof communications is called a replay attack. In this scenario an attacker captures a legitimate message or handshake and later resends the exact same data, making the receiver treat it as a fresh, valid transaction. This can fool authentication, session setup, or command execution, allowing unauthorized access or actions because the system doesn’t recognize the replay as a duplicate or expired message.

Defenses focus on ensuring freshness for every transaction. Use nonces or timestamps, require challenge-response authentication, and employ session tokens or rolling sequence numbers to detect duplicates. Protocols like TLS and WPA3 implement anti-replay protections to prevent these replays. In IoT, adding lightweight replay protection and secure command handling helps shield devices from such abuse.

Other terms refer to different activities: vulnerability scanning looks for weaknesses, information gathering collects target data, and cryptanalysis tries to break cryptographic schemes rather than addressing the reuse of old messages.