Many laptop computers, particularly those equipped with 802.11-type WiFi wireless networking
cards, can create ad hoc networks if they are within range of one another. These networks enable
computer-to-computer connections, a situation that creates security concerns you should be
aware of. An attacker with a network card configured for ad hoc mode and using the same
settings as your computer may gain unauthorized access to your sensitive files. You should note
that many PCs ship from the manufacturer with wireless cards set to ad hoc mode by default.
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