# Section 03: Hacking Concepts ## Hacker A hacker is a person skilled in information technology who uses their technical knowledge to achieve a goal or overcome an obstacle, within a computerized system by non-standard means. * White hat hacker: White hats are hackers who work to keep data safe from other hackers by finding system vulnerabilities that can be mitigated. * Black hat hacker: Black hats or crackers are hackers with malicious intentions. They often steal, exploit, and sell data, and are usually motivated by personal gain. * Grey hat: A grey hat is a computer hacker or computer security expert who may sometimes violate laws or typical ethical standards, but does not have the malicious intent typical of a black hat hacker. Links * ## Script Kiddie A script kiddie, kiddie, or skid is a relatively unskilled individual who uses scripts or programs, such as a web shell, developed by others. Links * ## Hacktivist In Internet activism, hacktivism, or hactivism (a portmanteau of hack and activism), is the use of computer-based techniques such as hacking as a form of civil disobedience to promote a political agenda or social change. Links * ## Insider An employee that is already inside of the organization. Organized crime [Definition](https://cvs-organization.gitbook.io/ceh-v12-notes/definitions/definitions_o#organized-crime)