Black Hat Cracker

Crackers (who are more popularly known as black hats or cyber terrorists) are technologically adept hackers who specialize in perpetrating unauthorized system breaches and database penetrations. They are the hacker type most associated to the "hacker" term in popular culture; that is, they're malicious, tech-savvy, and dangerous online outlaws who are willing to inflict thousands of dollars' worth of network infrastructure damage for personal gain, profit, political motivations, schadenfreude-based entertainment, the promotion of a social cause, or a multitude of other reasons