A sniffer is a software program used by IT administrators to monitor network usage, investigate network problems, investigate network misuse and abuse, identify configuration issues and determine the state of a network’s security. Sniffers ultimately decode the data so it is readable in words, numbers and computer code.
Note that last part: “determine the state of a network’s security.” That is a big one. This is because while good-guy IT security professionals use sniffers to determine the security of a network, bad guys also use them to see your data as it travels from your device to the router communicating the wireless internet signal. … Continue Reading