Unfortunately, the capabilities of network analyzers make them popular tools for malicious actors as well. Protocol analyzer attacks typically involve a malicious party using a network sniffer in promiscuous mode. A sniffer in promiscuous mode is capable of reading all data flowing into and out of an access point on the network. Attackers abuse packet sniffers to steal unencrypted information, spy on network traffic, and gather information to leverage in future attacks against the network. Protocol analyzer attacks commonly target user logins, financial information, and emails. Connecting to insecure networks such as public or free Wi-Fi puts users at a higher risk for packet analyzer attacks, as they are easier for attackers to sniff.
In addition to simply sniffing data, protocol analyzers are often used by attackers to execute more sophisticated attacks. These attacks can include (but are not limited to):
Spoofing attacks: Packet analyzers can be used to gather information about the users and devices connected to a network that an attacker intends to spoof.
Session sidejacking: In this type of attack, packet sniffers are used to steal session cookies in order to impersonate other users.
Man-in-the-middle attacks: Attackers can use network analyzers to intercept messages between two parties and then forge messages from party to party.
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