Security hacker computers and computer networks, and that cracker is the more appropriate term for those who break into computers, whether computer criminal (black hats) or computer security expert (white hats). A 2014 article concluded that "... the black-hat meaning still prevails among the general public". In computer security, a hacker is someone who focuses on security mechanisms of computer and network systems. While including those who endeavor to strengthen such mechanisms, it is more often used by the mass media and popular culture to refer to those who seek access despite these security measures. That is, the media portrays the 'hacker'
Black and white (police vehicle) painted white. However, motorcycles are usually all white and riot control and rescue vehicles are painted a steel blue. All Traffic Police cars of the Ministry of Transport throughout the 1970s and 1980s were black with white doors and roof. This distinguished them from the all white cars of the New Zealand Police. The Traffic enforcement functions of the MOT were merged into the New Zealand Police in 1992. Today NZ Police vehicles are single colour, usually white, often with Battenberg markings. Until the middle 1990s, the vehicles of the Lisbon Municipal Police were painted with the same pattern of