From crack + -er. From crack(verb), the sound made when one is broken. The hard "bread" and "biscuit" sense is first attested in 1739. The computing senses of cracker, crack, and cracking were promoted in the 1980s as an alternative to hacker, by programmers concerned about negative public associations of hack, hacking(“creative computer coding”). See Citations:cracker. Various theories exist regarding the term's application to poor white Southerners. One theory holds that it originated with disadvantaged corn and wheat farmers (corncrackers), who cracked their crops rather than taking them to the mill. Another theory asserts that it was applied due to Georgia and Florida settlers (Florida crackers) who cracked loud whips to drive herds of cattle, or, alternatively, from the whip cracking of plantation slave drivers. Yet another theory maintains that the term cracker was in use in Elizabethan times to describe braggarts (see crack(“to boast”)); a letter from 1766 supports this theory.[1][2][3]
2011 January 15, Saj Chowdhury, “Man City 4 - 3 Wolves”, in BBC[1]:
And just before the interval, Kolarov, who was having one of his better games in a City shirt, fizzed in a cracker from 30 yards which the Wolves stopper unconvincingly pushed behind for a corner.
An ambitious or hard-working person (i.e. someone who arises at the 'crack' of dawn).
(computing) One who cracks (i.e. overcomes) computer software or security restrictions.
1984, Richard Sedric Fox Eells, Peter Raymond Nehemkis, Corporate Intelligence and Espionage: A Blueprint for Executive Decision Making, Macmillan, page 137:
It stated to one of the company's operators, “The Phantom, the system cracker, strikes again . . . Soon I will zero (expletive deleted) your desks and your backups on System A. I have already cracked your System B.
2002, Steve Jones, Encyclopedia of New Media, page 1925:
Likewise, early software pirates and "crackers" often used phrases like "information wants to be free" to protest the regulations against the copying of proprietary software packages and computer systems.
Check this shit: You got cracker farm boy Luke Skywalker, Nazi poster boy, blond hair, blue eyes. And then you got Darth Vader, the blackest brother in the galaxy, Nubian god!
^ Gavin Cochrane (1766 June 27) Letter to the Earl of Dartmouth: “I should explain to your Lordship what is meant by crackers; a name they have got from being great boasters; they are a lawless set of rascalls on the frontiers of Virginia, Maryland, the Carolinas and Georgia, who often change their places of abode.”