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Definition: war driving

Driving around an area with a laptop computer and an 802.11 wireless LAN adapter in order to find unsecured wireless LANs. When the laptop's wireless adapter (NIC) is set to promiscuous mode, it will receive any packets within its range. The goal is to find vulnerable sites either to obtain free Internet service or to potentially gain illegal access to the organization's data. See 802.11, Wi-Fi hotspot and war chalking.