The widespread of wireless technology was brought by the need to cover open areas and places with cable problems. There are many technologies which use "air" to transfer information such as Bluetooth, Gprs and the standard 802.11 known as Wireless or WiFi.
During last years the use of Wireless has grown. Many companies and individuals adopted this system to connect many PC to one single network thanks to the ease of installatin and the high speed of data transfer.
Wireless can help the connection among PCs and network but there are also security risks that cannot be ignored. A potential hacker could use radio air to get access to the network.
For this reason, specific instruments, used also in cabled systems, allow to check data flux and may guarantee a constant monitoring to act quickly in case of external attack.