A person attempting to gain unauthorized access to a computer system is known as what?

The term "hacker" is used to describe a person who seeks to gain unauthorized access to computer systems, whether for malicious purposes, to exploit vulnerabilities, or to gain sensitive information. In the cybersecurity context, hackers can be categorized into different types: white hat hackers who are ethical and help improve security, black hat hackers who engage in illegal activities, and gray hat hackers who fall somewhere in between. The common understanding of "hacker" encompasses the broad range of individuals who manipulate technology to breach security measures.

The other terms presented, while they may imply similar activities, lack the specific connotation or widely accepted definition associated with "hacker." An "intruder" and "invader" suggest someone breaking in but do not inherently connect to the computer system context. A "malicious meddler" implies a degree of intention but is not the conventional term used in the cybersecurity field. Therefore, "hacker" stands out as the most accurate label for someone attempting to gain unauthorized access to computer systems.