Between now and 2006, 70pc of successful wireless local area network (WLAN) attacks will be because of the misconfiguration of WLAN access points (AP) and client software, according to Gartner.
To protect themselves, businesses must make sure that employees or hackers don't install unauthorised wireless APs on the network and that APs are configured securely. In dense environments, such as urban areas or multi-tenant office buildings, companies have to make sure that their users don't connect to other companies' networks.
The least expensive, and least effective, way of doing this is to buy a wireless sniffer handheld and walk the perimeter of the network. The most expensive, and most secure, is to install a separate set of wireless intrusion detection sensors.