Definition of "warchalking" [warchalking]

• Present participle of warchalk. (verb)

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• "Imagine how fantastically dull it would be to be a Fed cop assigned to tracking down email worms -- getting long briefings from nerds on DLLs, ploughing through obfuscated VB script, looking at inscrutable email headers -- Zzzzzz. Think about this for a sec: Fed cops want to believe that warchalking is going to lead to hacking and cracking and spamming and the whole quartet of the Horsemen of the Infocaplyse."
• "After helping to come up with the idea of "warchalking" -- marking wireless network availablity with chalk, using runes derived from old-time hobo-marks -- Matt got completely overwhelmed with publicity."
• "The drive-by hacking phenomenon -- dubbed "warchalking" because crooks who have succeeded mark buildings with a visible chalk sign to invite further attacks -- was tested by an English newspaper that, within minutes and undetected, broke into the private network used by the Cabinet Office and MPs ..."