Hack is a term in the slang of the technology culture which has come into existence over the past few decades. As a noun, it has a number of related meanings; as a verb, it means creating or participating in a hack. See Hacking.

All of the modern meanings seem to be rooted in its widespread use as slang throughout Massachusetts Institute of Technology (MIT), starting in the 1960s. There, the original meaning of hack was an elaborate and flamboyant student prank; it was used with Hacker#history , meaning one who perpetrates a hack . Past MIT hacks include: *Covering the university s signature Great Dome (which seems to be something of a magnet for hacks) with tin foil *Putting a fake (but convincing) MIT Campus Police cruiser on the Dome *Decorating the Dome as R2-D2 *Hiding the university president s office by covering its entrance with a fake bulletin board *Inflating a huge balloon on the playing field during a Harvard-Yale American football game *Turning the MIT Dome into a giant baseball with a Red-Sox logo after the Red-Sox won the World Series

Over time, the meaning of the word there was expanded, perhaps through contact with the ham radio community, which used it in something close to the following meanings. In any event, it came to mean either a Kludge, or the opposite of a kludge, as in a clever or elegant solution to a difficult problem. In the term hack value it also acquired a meaning of anything that was simultaneously fun and clever.

The initial hacker community at MIT, particularly those associated with the Tech Model Railroad Club, applied this pre-existing local slang to computer programming, producing the variant which first came into common use outside MIT. A hack now meant a clever or quick fix to a computer program problem, as in That hack you made last night to the editor is working well . A Hacker came into the lexicon as meaning one who hacks, using this definition. The surface implication (which might be a modest mocking and play on the literary definition) was a casual attempt to fix the problem, but the deeper meaning was something more clever and thus impressive.

It was used especially among United States university computing center staff, such as those at Stanford in the period beginning approximately in the mid-1960s. The context determined whether the complimentary or derogatory meanings was implied. Phrases such as ugly hack or quick hack generally referred to the latter meaning; phrases such as cool hack or neat hack referred to the former.

In a similar vein, a hack may refer to works outside of computer programming. For example, a mathematics hack means a clever solution to a mathematical problem. The GNU General Public License has been described as a Copyright hack because it cleverly uses the copyright laws for a purpose the lawmakers did not foresee. All of these uses now also seem to be spreading beyond MIT as well.

The term has since acquired an additional and now more common meaning, since approximately the ), a hack refers to an extension of the operating system which provides additional functionality.

Sometimes the jargon used by hackers is thought of as a language in its own right, called hackish. This should not be confused with 1337 or Leetspeak.

The not computer-related term of hacking is the act of putting an axe to, say, a tree, in order to chop it up into multiple pieces. it has also been suggested that, because wood acquired in this manner is often used to construct furniture the computer-industry chose to call a programming (construction) effort a hack , although the etymology is more likely to have it s roots in the MIT s use.

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