white hat

Noun

 * 1) A good person; a hero.
 * 2)  A well-meaning hacker who hacks for a good cause or to aid a company, organization, or government without causing harm (for example, to identify security flaws).
 * 3)  A sailor.

Translations

 * Arabic: هَاكِر
 * Chinese:
 * Mandarin: 白帽黑客
 * Finnish: tietoturvahenkilö
 * Welsh: het wen