What Is WiFi Sniffing
Let us start with what does the acronym Wi-Fi stands for, which is Wireless Fidelity. Many of us might be interested as to how the whole wireless transmission of data actually works? The desktop computer we use is networked to a connection and is usually wired around with all the wires connected to a hub or router. It is continuously sending voltages of +5V or -5V in an arrangement which is pre-defined to it. We do not even realize these signals are passing high above us in prearranged cadence. This alternating signal encodes zeros and ones on a radio wave. Now what is sniffing in real? Sniffing is a term common for network hackers who are able to use this “sniffing” program to intercept the packets of data passed over Ethernet. In short it is the attacking gun of the hackers.
A sniffer is basically software which is processed by a variety of techniques and is the armor of the hacking solider. Sniffing can be processed by a list of techniques. The first step is to scan the network passively. This is generally done at the beginning of the data transmission. Special software is required which scans the whole data in the form of radio waves passively and the sniffing is carried on. The wireless network cards are hacked and the whole process of sniffing is carried on before the entire transmission of data takes place. This data sniffer can easily decode the data transmitted secretly over the Wi-Fi. This is also known as Packet sniffing when used by network administrators to find out faults in the network. The name of the tool is the Network analyzer when used by an Authorized network administrator but is termed as a sniffer when used by hackers.
Service Set Identifier or in short SSID is the device used to check the protocols and the module of the networking. After the data has been sniffed the hackers check for the SSID used in the wireless network. When multiple access points are used, it becomes easier for the hackers to identify and detect the SSID for sniffing. Sometimes wireless probing is also used to detect the SSID and hacking the wireless network. Then the MAC is collected for use in wireless spoofing so that the hacker can hide their own identity and the access points of the network cannot collect the MAC data of the hacker. The easiest way to avoid Wi-Fi sniffing is to use a secure encryption technique one like WEP.