Warchalking is the act of drawing symbols in open spaces to warn of wireless Wi-Fi networks. A Group of Friends designed Warchalking in June 2002 it is publish by Matt Jones. Designer of icons that have had a significant impact on mass media and blogging.
The name warchalking comes from wardriving, the search for wireless access that travels through a populated area in a vehicle.
When someone finds a Wi-Fi node, a war eater draws a special symbol on a nearby visible object—for example, a wall, a sidewalk, or a post.
Symbols used in warchalking
Since the publication of this document, hundreds of blogs have repeated the news, which has helped popularize these Wi-Fi icons and make them a global standard. They also appeared on numerous newscasts and found a large following in the United States.
Some of the most important symbols are those in the following illustration:
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Image Result for Warchalking Symbols
In these icons, the SSID is a substitute for the Wi-Fi network’s name, and then the closed or open circle icon indicates whether the Wi-Fi is protected. Finally, the network speed is a display of under the circle.
So, when you are in a square, street, beach, or public place, watch your surroundings. You can see these icons, and they will help you have free Wi-Fi.
Wardriving and Warchalking attacks
Despite technological advances, many questions remain about security, considered the Achilles heel of wireless networks. Today, Brazil leads in an uncomfortable ranking. Considered the most efficient and courageous globally, Brazilian hackers specialize in some standard wireless practices known as wardriving and warchalking.
The term for driving a car search for open and intrusive wireless networks. To practice wardriving, you need a car, a computer, an ethernet card configured in “promiscuous” mode (the device completely intercepts and reads communication packets). And some antenna is positioned inside or outside the vehicle.
Practice writing symbols that indicate wireless networks and their settings. Typically, chalk markings on sidewalks indicate the location of wireless networks, making them easier to find for outside connections.