A person who uses their computer skills to solve a challenge or problem. Hackers are not always cybercriminals. White Hat hackers are computer security experts working with companies or organizations to legally find cybersecurity vulnerabilities that need to be fixed. Black Hat hackers are the bad people who break into computer systems for profit or other nefarious reasons. And finally, hackers are also creative people who use programming skills and DIY hardware in arts, crafts, woodworking, metalworking, music, and other creative activities.