After a user performed a war driving attack, the network administrator noticed several similar markings where WiFi was available throughout the enterprise. Which
of the following is the term used to describe these markings?
A.
IV attack
B.
War dialing
C.
Rogue access points
D.
War chalking
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: An initialization vector is a random number used in combination with a secret key as a means to encrypt data. This number is sometimes referred to as a nonce,
or “number occurring once,” as an encryption program uses it only once per session.
An initialization vector is used to avoid repetition during the data encryption process, making it impossible for hackers who use dictionary attack to decrypt the
exchanged encrypted message by discovering a pattern. This is known as an IV attack.
A particular binary sequence may be repeated more than once in a message, and the more it appears, the more the encryption method is discoverable. For
example if a one-letter word exists in a message, it may be either “a” or “I” but it can’t be “e” because the word “e” is non-sensical in English, while “a” has a
meaning and “I” has a meaning. Repeating the words and letters makes it possible for software to apply a dictionary and discover the binary sequence
corresponding to each letter.
Using an initialization vector changes the binary sequence corresponding to each letter, enabling the letter “a” to be represented by a particular sequence in the first
instance, and then represented by a completely different binary sequence in the second instance. An IV attack does not involve marking external surfaces to
indicate open Wifi networks.
Therefore, this answer is incorrect.
B: 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. Therefore, this answer is incorrect.
C: A rogue access point is a wireless access point that has either been installed on a secure company network without explicit authorization from a local network
administrator, or has been created to allow a hacker to conduct a man-in-the-middle attack. Rogue access points of the first kind can pose a security threat to large
organizations with many employees, because anyone with access to the premises can install (maliciously or non-maliciously) an inexpensive wireless router that
can potentially allow access to a secure network to unauthorized parties. Rogue access points of the second kind target networks that do not employ mutual
authentication (client-server server-client) and may be used in conjunction with a rogue RADIUS server, depending on security configuration of the target network.
This is not what is described in the question.
Therefore, this answer is incorrect.http://www.webopedia.com/TERM/W/warchalking.html
http://www.techopedia.com/definition/26858/initialization-vector http://en.wikipedia.org/wiki/War_dialing
http://en.wikipedia.org/wiki/Rogue_access_point