The development of IT wireless network helps computer users much in connecting to the Internet by using a wave medium. The security of the Wi-Fi network has many weaknesses. Many wireless service providers such as commercial hotspots, ISP, internet cafes, colleges, and offices use the wireless network, but they have very little attention to the security of data communication in the wireless network. The modus that the wireless hackers do in breaking into the security system is wardriving. Wardriving is an activity to get information about a wireless network and get access to the wireless network that aim to get an internet connection. But on the contrary wardriving is also done for certain purposes, such as curiosity, trial and error, research, practical tasks, crime and others.  Keywords : Wireless, Network, Security, Crime, Hacker