What term describes a person who uses computers to gain unauthorized access to data?

The term that describes a person who uses computers to gain unauthorized access to data is "hacker." This term has evolved over time and can encompass various types of individuals, including those with malicious intent, such as cybercriminals seeking to exploit systems for data theft or other illegal activities. The primary characteristic of a hacker is their ability to manipulate and navigate computer systems and networks to bypass security measures.

While "Internet thief" and "identity thief" are terms related to cybercrime, they specify types of crimes rather than the act of unauthorized access itself. An "Internet thief" may steal content or merchandise online, while an "identity thief" specifically refers to someone who steals personal information to commit fraud. The term "data intruder" could imply unauthorized access, but it is not commonly used in professional contexts the way "hacker" is. The terminology used in cyber security often reflects the broader and evolving nature of the crimes associated with it, which is why "hacker" is the most accurate and widely recognized term in this context.