Definition of "phreaking" [phreaking]

• The cracking or exploring of a telephone system, e.g. trying to get free calls or to discover special service numbers or other internal technical information. (noun)
• Present participle of phreak. (verb)

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• "The art of cracking into the phone company to make free calls or just for the challenge of it is known as phreaking."
• "He and two others founded International Subversives magazine, offering tips on "phreaking" - how to break into telephone systems illegally and make free calls."
• "Hackers made headlines for breaking into phone company systems more than 20 years ago -- a practice that was known as phreaking -- but as the traditional telephone system has become integrated with the Internet, it's creating new opportunities for fraud that are only just beginning to be understood."