The practice of marking open wireless access points is called which of the following?

A.
War dialing

B.
War chalking

C.
War driving

D.
Evil twin

Explanation:
War chalking is the act of making chalk marks on outdoor surfaces (walls, sidewalks, buildings, sign posts,
trees) to indicate the existence of an open wireless network connection, usually offering an Internet
connection so that others can benefit from the free wireless access. The open connections typically come
from the access points of wireless networks located within buildings to serve enterprises. The chalk
symbols indicate the type of access point that is available at that specific spot.
Incorrect Answers:
A: War dialing is a technique of using a modem to automatically scan a list of telephone numbers, usually
dialing every number in a local area code to search for computers, Bulletin board systems and fax
machines. Hackers use the resulting lists for various purposes: hobbyists for exploration, and crackers –
malicious hackers who specialize in computer security – for guessing user accounts (by capturing
voicemail greetings), or locating modems that might provide an entry-point into computer or other
electronic systems. It may also be used by security personnel, for example, to detect unauthorized
devices, such as modems or faxes, on a company’s telephone network. War dialing does not involve
marking external surfaces to indicate open Wifi networks.
C: War driving, also called access point mapping, is the act of locating and possibly exploiting connections
to wireless local area networks while driving around a city or elsewhere. To do war driving, you need a
vehicle, a computer (which can be a laptop), a wireless Ethernet card set to work in promiscuous mode,
and some kind of an antenna which can be mounted on top of or positioned inside the car. Because a
wireless LAN may have a range that extends beyond an office building, an outside user may be able to
intrude into the network, obtain a free Internet connection, and possibly gain access to company records
and other resources. War driving does not involve marking external surfaces to indicate open Wifi
networks. War driving detects the networks, war chalking marks them.
D: An evil twin, in the context of network security, is a rogue or fake wireless access point (WAP) that
appears as a genuine hotspot offered by a legitimate provider.In an evil twin attack, an eavesdropper or hacker fraudulently creates this rogue hotspot to collect the
personal data of unsuspecting users. Sensitive data can be stolen by spying on a connection or using a
phishing technique.
For example, a hacker using an evil twin exploit may be positioned near an authentic Wi-Fi access point
and discover the service set identifier (SSID) and frequency. The hacker may then send a radio signal using
the exact same frequency and SSID. To end users, the rogue evil twin appears as their legitimate hotspot
with the same name. Evil twin does not involve marking external surfaces to indicate open Wifi networks.

http://www.webopedia.com/TERM/W/warchalking.html
http://en.wikipedia.org/wiki/War_dialing
http://searchmobilecomputing.techtarget.com/definition/war-driving
http://www.techopedia.com/definition/5057/evil-twin