A __ Hacker Is Acting for His Personal Gain
Puzzle 7 of Tattoo Shop Pack
Question is: A __ Hacker Is Acting for His Personal Gain
and the answer is: BLACKHAT
Word Meaning:
BLACK HAT — (transitive, idiomatic) A villain in a story, especially in a Western (a film or other work of the Western genre).
Definitions from Wiktionary.