Hacking (English verb to hack, singular noun a hack) refers to the re-configuring or re-programming of a system to function in ways not facilitated by the owner, administrator, or designer. The term(s) have several related meanings in the technology and computer science fields, wherein a "hack" may refer to a clever or quick fix to a computer program problem, or to what may be perceived to be a clumsy or inelegant (but usually relatively quick) solution to a problem, such as a "kludge".
The terms "hack" and "hacking" are also used to refer to a modification of a program or device to give the user access to features that were otherwise unavailable, such as by circuit bending. It is from this usage that the term "hacking" is often incorrectly used to refer to more nefarious criminal uses such as identity theft, credit card fraud or other actions categorized ascomputer crime; there being a distinction between security breaking and hacking, a better term for security breaking would be "cracking
HACKING A NEW PERSPECTIVE .ppt