Similar words: backer, cracker, slacker, knacker, hijacker, attacker, quackery, knickerbockers. Meaning: ['hækə(r)] 
n. 1. someone who plays golf poorly 2. a programmer who breaks into computer systems in order to steal or change or destroy information as a form of cyber-terrorism 3. a programmer for whom computing is its own reward; may enjoy the challenge of breaking into other computers but does no harm 4. one who works hard at boring tasks.
n. 1. someone who plays golf poorly 2. a programmer who breaks into computer systems in order to steal or change or destroy information as a form of cyber-terrorism 3. a programmer for whom computing is its own reward; may enjoy the challenge of breaking into other computers but does no harm 4. one who works hard at boring tasks. 
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1. A hacker had managed to get into the system.
2. This report would be intelligible only to a hacker.
3. The hacker came smack up against the company's policy of keeping its records in code.
4. Andrew Hacker gives campus-based intellectualism a good name.
5. Hacker believes that the position of women in society is analogous to that of minority groups such as immigrants and Blacks.
6. Computer hackers A computer hacker is a person who gains access to a computer system without permission.
7. A hacker, apparently based in St Petersburg, had been accessing Microsoft's internal systems for a number of days.
8. I take the couch, an obligatory furnishing in hacker dens, even posh hacker dens like these at Xerox.
9. It turned out that a hacker had been masquerading as Weiss online.
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10. Hacker Young advised that the Halls should opt for the dual status of charity and limited liability company.
11. To a hacker, a modification doesn't even have to be particularly useful -- just elegant.
12. Had the hacker made off with the source code of any products?
13. Super Hacker ready for linkup.
14. China rejects as nonsense that it a hacker haven.
15. This site was attacked by a hacker last week.
16. The computer hacker wrote that he was from Russia.
17. Well, briefly speaking, a hacker is a computer BOSS.
18. I was bothered by a pilferer named hacker.
19. The hacker can also get in by sending SQL injections to find file names and can look for residual data in those files.
20. Hacker ethic, as the behavioral rules of hacker subculture, leads to the damage to information security and active moral meaning as well.
21. Computing becomes an end in itself as the fledgling hacker gets sucked into the loop between the human and the computer.
22. Men see this as exercising their right to free speech, upholding a tradition in cyberspace forged by the early hacker community.
23. Contrary to the popular notion, the biggest threat isn't some boy hacker sneaking off with your card number.
24. In principle, this is very similar to the position of a computer hacker.
25. But will an obligation of confidence attach to a computer hacker?
26. Though we were yoked together for decades, I feel as threatened as if he were the hacker.
27. Lastly, if the screening router is circumvented by a hacker, the rest of the network is open to attack.
28. Especially this kind of virus can be in the long-range server site that is appointed by hacker of join of infection computer tiring-room, download other and baleful program and move.
29. The iPhone was the first phone that a Luddite could figure out in seconds and a hacker could tinker around with for endless hours.
30. To gain access to Cydia, iPhone owners must jailbreak their smartphones using some freely available tools courtesy of the hacker group iPhone Dev-Team.