Black hat

Black hat may refer to:

• Black hat (film), a movie's villain or bad guy, especially one that actually wears a black hat
• Black hat hacking, Internet slang for someone breaking computer or Internet security
• Black Hat Briefings, a computer security conference
• the Iron Brigade, also known as the Black Hat Brigade, an infantry brigade during the American Civil War
• "Black Hat" Lamas, a term used in Buddhism, in reference to the Black Crown worn by the Karmapa
• Haredi Jews, whose men wear black hats and coats
• Fear of a Black Hat, a 1994 American mockumentary movie