For many years I’ve talked about writing this up, so much that I feel guilty for telling the story before I wrote it down.

Executive summary

The term hacker used today appears to have stemmed from a word recorded in English by the 1200s, as horses for hire were referred to as hackneys. Coaches for hire took the horse’s name in the early 1600s, when London moved to restrain hackney coaches by royal proclamation in 1635 and put them under license by act in 1662. The word shortened to “hack” around 1700, imported to the colonies, and American drivers cruising for fares were still “hacking” through the 1900s.

A “hack” became defined by the 1690s as someone doing routine work for hire, the drudge writer being the type specimen. It was June 1959 when the Tech Model Railroad Club at MIT put both words in its club dictionary: a hack was a project pursued past constructive purpose, and a hacker was simply one who hacks. Club members carried the vocabulary onto the TX-0 computer and into MIT’s new artificial intelligence group in those same years, which is how a railroad club’s word attached itself to computing.

That’s right, AI is to blame. Thanks MIT.

Perhaps most interestingly, from the 1200s to today, the English term hackney/hacker is related to what appears to be a human condition; it changed in meaning only marginally despite communication evolving from ancient dirt roads of horses delivering envelopes to today’s digital networks of apps delivering packets.

When you think about people taking possession, not ownership, of a carriage or a car and poking around city streets to find riders to pay them…imagine instead people taking possession, not ownership, of an application or website and poking around networks to find assets they can profit from.

Detailed backstory

The earliest detailed mention of a word appearing similar to “hacker” that I have found so far appears in a fun story from 1396 with “hackneys” and “hackneymen”.

Hackneys were horses and their operators were the hackneymen. This was a form of “for hire” shared service, which provided inexpensive/efficient delivery of people, packages and communications.

Saying a hackneyman is someone for hire seems already very close to modern usage, and American cab slang completed the circle centuries later, when driving for fares became hacking and drivers became hackers.

A political hack is someone you probably think of being “coin operated”. A hack writer is someone you probably think of paying bills with low-grade publications. A hack on the street is someone you probably think of when you want to take a ride in exchange for money.

I’ll make a quick aside here for the term ‘tohaccian’, an Old English verb meaning to hack into pieces. It sits in Bosworth-Toller and philologists accept it as ancestor of the modern cutting verb. It belongs to a separate lineage from the horse. Merriam-Webster derives hackney from the name of the parish of Hackney, whose meadows likely pastured horses for the London market. Two words traveled two roads and converge only in modern spelling, so the cutting verb sits aside here because this post follows the hire lineage.

When “tohaccian” goes into an Old English translator, it maps forward to “hack” and “cut”. Reverse lookups for ‘hack’ surface other cutting words, “inbesléan”, “hêawan”, “aceorfan” and so on, and the horse appears nowhere in any of them. The lookup tables confirm the split. Every road from tohaccian leads to cutting, and every road from the hackney leads to hire.

It can be fun to read through an entire list of unskilled and profit-oriented jobs over history that have been labeled as “hackers” (people cutting things notably excluded), as found in the Collins Dictionary, which also displays a chart of usage starting in the 1700s.

Merriam-Webster carries the whole thing in one entry: the horse for ordinary riding, an obsolete sense for a person who works for hire, a current sense for a carriage or automobile kept for hire, and a verb from the 15th century meaning to make common, then trite and vulgar. The entry dates the noun to the 13th century and roots the etymology in the parish of Hackney, whose meadows likely pastured horses for the London market. The thesis of this post sits inside that entry as sense three, marked obsolete.

What I like about the Crofts excerpt at the top is a discussion about security of messages in transit and people stealing from the service providers (e.g. 14th century equivalent of telephone company phreaking):

Also note the title of the book I’m quoting says it is about communications during the Tudors (1485-1603), who came onto the scene 100 years after this excerpt from 1396, and also the Stuarts (1603-1714) who were another 100 years after that.

Hopefully it is obvious why 1396-1714 remains relevant to a term like “hacker” today. If not, I can offer you a bit more detail about the systemic information security threats and methods of early English times.

For example cryptography historians recently hosted an exposition on Tudor secrecy methods and attacks, discussing security management within an ancient “hub” of communications.

…secrets of Henry VIII and Elizabeth I will be revealed at Bletchley Park. It was during their reigns that a code system developed so complex it was not broken for nearly 300 years. Tudor spymasters and code breakers were the power behind the throne leading to the defeat of the Spanish Armada and the execution of Mary, Queen of Scots.

17th through 19th century

As another aside, remember how the dictionary mentioned “vulgar” and “commonplace”. The best example of that is 1602, when the first quarto of The Merry Wives of Windsor printed Mistress Page’s line that these knights will hack. Editors split on the gloss, some reading it as becoming common and cheap, several reading it plainly as whoring. Every gloss keeps the hire sense and drags it into the gutter:

“A Philosophical and Practical Treatise on Horses” John Lawrence, 1796. Pages 164-5 wrote that hack or hackney was a general term for a “tough and everlasting” (Page 239) road horse, not necessarily an inferior one or one for hire.

We see this usage again in 1893 when Rush Shippen Huidekoper writes on pages 296-7 of “The Hackney Horse” about “the hackney, or common road horse”

Carriages had carried the horse’s name for two centuries by then. Hackney coaches ply London streets in the 1620s, a royal proclamation moved to restrain them in 1635, and an act of 1662 put four hundred under license. Statute law kept the term alive into the railway age, as we can see in the London Hackney Carriage Act, 1831 and from several rules in a "The Hackney Carriage Pocket Directory for 1832"

• Numbered plates to be placed upon hackney carriages -- Penalty for concealing plates, or preventing persons inspecting and taking the number thereof.
• Hackney carriages standing in any street to be deemed to be plying for hire, and the driver thereof refusing to go with any person liable to a penalty of 40s.
• Number of persons to be carried in a hackney carriage to be painted thereon.--Penalty for neglect, or refusal to carry the number, 40s.
• Deposit to be made for carriages waiting.--Penalty on the driver refusing to wait, or to account for the desposit, 40s.
• A clear space of ten feet to be left after every four hackney carriages on any standing.--Penalty 20s.

MIT 1950s

Peter R. Samson in Tech Model Railroad Club of MIT in June 1959 publishes “AN ABRIDGED DICTIONARY of the TMRC LANGUAGE.”

1) something done without constructive end; 2) a project undertaken on bad self-advice; 3) an entropy booster; 4) to produce, or attempt to produce, a hack3.

HACKER: one who hacks, or makes them

The Jargon File canonized the computing senses by the mid 1970s, opening its hacker entry with the axe and the cutting lineage, which shows how completely the two roads had merged by then:

HACK n. 1. Originally a quick job that produces what is needed, but not well. 2. The result of that job. 3. NEAT HACK: A clever technique. Also, a brilliant practical joke, where neatness is correlated with cleverness, harmlessness, and surprise value. Example: the Caltech Rose Bowl card display switch circa 1961. 4. REAL HACK: A crock (occasionally affectionate). v. 5. With "together", to throw something together so it will work. 6. To bear emotionally or physically. "I can't hack this heat!" 7. To work on something (typically a program). In specific sense: "What are you doing?" "I'm hacking TECO." In general sense: "What do you do around here?" "I hack TECO." (The former is time-immediate, the latter time-extended.) More generally, "I hack x" is roughly equivalent to "x is my bag". "I hack solid-state physics." 8. To pull a prank on. See definition 3 and HACKER (def #6). 9. v.i. To waste time (as opposed to TOOL). "Watcha up to?" "Oh, just hacking." 10. HACK UP (ON): To hack, but generally implies that the result is meanings 1-2. 11. HACK VALUE: Term used as the reason or motivation for expending effort toward a seemingly useless goal, the point being that the accomplished goal is a hack. For example, MacLISP has code to read and print roman numerals, which was installed purely for hack value. HAPPY HACKING: A farewell. HOW'S HACKING?: A friendly greeting among hackers. HACK HACK: A somewhat pointless but friendly comment, often used as a temporary farewell. [The word HACK doesn't really have 69 different meanings. In fact, HACK has only one meaning, an extremely subtle and profound one which defies articulation. Which connotation a given HACK-token has depends in similarly profound ways on the context. Similar comments apply to a couple other hacker jargon items, most notably RANDOM. - Agre]

HACKER [originally, someone who makes furniture with an axe] n. 1. A person who enjoys learning the details of programming systems and how to stretch their capabilities, as opposed to most users who prefer to learn only the minimum necessary. 2. One who programs enthusiastically, or who enjoys programming rather than just theorizing about programming. 3. A person capable of appreciating hack value (q.v.). 4. A person who is good at programming quickly. Not everything a hacker produces is a hack. 5. An expert at a particular program, or one who frequently does work using it or on it; example: "A SAIL hacker". (Definitions 1 to 5 are correlated, and people who fit them congregate.) 6. A malicious or inquisitive meddler who tries to discover information by poking around. Hence "password hacker", "network hacker".

HACKISH adj. Being or involving a hack. HACKISHNESS n.