Two young men have been sentenced to prison for the attempted theft of credit card numbers. They were using a wi-fi connection to tap in to the computer network at a Lowe's home improvement store in Detroit, Michigan. They found the network was unsecured while driving around, charting wireless networks.
Wireless networks have provisions for password protection, but this protection has to be turned on. If you install a wireless network and don't secure it, you're giving access to your computers to anyone with an antenna in range of your system. Any random person with a wireless-enabled laptop can cause all kinds of havoc to your computer, and to any other computers connected to your network. If you have high speed access to the internet, someone can install software to attack other systems.
If you install a wireless network, it's your responsibility to secure it. If you don't secure it, you're part of the problem.
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