hacker

hakkeri puhekieltä One who is expert at programming and solving problems with a computer.
(quote-book)
puhekieltä One who uses a computer to gain unauthorized access to data, or to carry out malicious attacks.
2007, Committee on Improving Cybersecurity Research in the United States, ‎Toward a Safer and More Secure Cyberspace

Typically, one hacker will annoy another; the offended party replies by launching a denial-of-service attack against the offender.

Thomas Limbrick, who was only nine years of age, said he lived with his mother when Deborah was beat: that his mother throwed her down all along with her hands; and then against a wall, and kicked her in the belly: that afterwards she picked her up, and beat her with the hacker on the side of the head; wiped the blood off with a dish-clout, and took her up to bed after she was dead.

When the dipping is thus over, the next work is to "chip" or scarify the tree immediately over the box .... This is done by an instrument usually called a "hacker," sometimes "shave." Its form is somewhat like a "round shave," narrowing at the cutting place to the diameter of an inch, with a shank, to be fixed securely into a strong, heavy handle of about two feet in length, while the faces of the trees are low, but the handle is made longer as years advance the faces higher.

23. George C. howard, Philadelphia, U.S.

GRINDSTONE HACKER.

Report.--Commended for the contrivance of an instrument, called a "hacker," that is used in trimming grindstones. This hacker turns with the stone, and is drawn across in a slide rest, and fulfills its important function satisfactorily.

In January or February the "hacker," with his keen-bladed ax, begins the round which ends the season. ... About a quart of sap is taken from each box by means of the trowel-shaped scoop used by the dipper, and then the hacker comes along and starts the flow afresh by wounding the tree again.