informal a computer enthusiast or fanatic, esp one who uses a personal computer to gain unauthorized access to data, e.g. that stored in the system of a company or organization
Hackers seek to gain unauthorized access to a computer or network by trying to guess passwords using programs that try millions of permutations. Alternatively they set traps to capture passwords from legitimate users — Dick Pountain
a person who cuts or slashes
a person who goes horse-riding along ordinary roads