Richard, an attacker, aimed to hack loT devices connected to a target network. In this process. Richard recorded the frequency required to share information between connected devices. After obtaining

A side-channel attack exploits information leaked from a system's physical implementation such as power consumption or timing, not the capture and retransmission of radio signals.

A replay attack involves intercepting legitimate transmitted data and retransmitting it to duplicate an authorized action. Richard used URH (Universal Radio Hacker) to capture and analyze raw RF command sequences from IoT devices, then injected those same captured signals back onto the same frequency - the defining characteristic of a replay attack against wireless IoT communication.

A cryptanalysis attack focuses on breaking or weakening cryptographic algorithms and keys, not on recording and replaying wireless command sequences.

Reconnaissance is a passive information-gathering phase used to learn about a target, not an active attack that injects replayed signals into a network.