Idk about the interview, but I I'm pretty sure white-hat and black-hat originated as an inside joke meaning wizards and warlocks.

Wizards wear a white hat, Warlocks a black one. Good hackers and bad hackers.

It's because computer nerd/hackers are often called Wizards by people who have no idea how computers work. So they called malicious hackers that created viruses and crashed systems Warlocks.