--- Definition --- The Jargon File, a compendium of hacker slang, defines hacker as "A person who enjoys exploring the details of programmable systems and how to stretch their capabilities, as opposed to most users, who prefer to learn only the minimum necessary." [1] The Request for Comments (RFC) 1392, the Internet Users' Glossary, amplifies this meaning as "A person who delights in having an intimate understanding of the internal workings of a system, computers and computer networks in particular." [2] These hackers are disappointed by the mass media and mainstream public's usage of the word hacker to refer to security breakers, calling them "crackers" instead.