Sniffing attack

Theft of data by using a packet sniffer

Sniffing attack in context of network security, corresponds to theft or interception of data by capturing the network traffic using a packet sniffer. When data is transmitted across networks, if the data packets are not encrypted, the data within the network packet can be read using a sniffer. Using a sniffer application, an attacker can analyze the network and gain information to eventually cause the network to crash or to become corrupted, or read the communications happening across the network.

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