In Tibetan Buddhist cultures, coloured hats are sometimes used to symbolise attitudes towards various different abstract concepts. Several sects are distinguished by the colour of their hats: * Yellow Hat – the Gelug sect * Red Hat – the Nyingma, Sakya, and Kagyu sects * Black Hat – the Karma Kagyu sect In computing slang, hackers and crackers are identified according to their intentions. * White hat hacker, who hacks for beneficial purposes * Black hat hacker, who hacks for malevolent purposes * Grey hat hacker, who hacks with ambiguous ethics * v * t * e