pues lamentablemente existe personas que lo hacen
aqui en mi trabajo, una persona pidio permiso para utilizar la red wifi,
para checar sus cuentas bancarias para ver como liquidaria su cuenta.
Esta es uno de las utilerias mencionadas
http://www.kismetwireless.net/
Ethereal/Tcpdump compatible data logging
Airsnort compatible weak-iv packet logging
Network IP range detection
Built-in channel hopping and multicard split channel hopping
Hidden network SSID decloaking
Graphical mapping of networks
Client/Server architecture allows multiple clients to view a single
Kismet server simultaneously
Manufacturer and model identification of access points and clients
Detection of known default access point configurations
Runtime decoding of WEP packets for known networks
Named pipe output for integration with other tools, such as a layer3 IDS like Snort
Multiplexing of multiple simultaneous capture sources on a single Kismet instance
Distributed remote drone sniffing
XML output
Over 20 supported card types
y todas las herramientas son bajo linux segun la revista Elektron