Which term describes a person who breaks into a system or network without authorization?

The term that describes a person who breaks into a system or network without authorization is generally defined simply as a hacker. In the context of cybersecurity, "hacker" is a broad term that encompasses individuals who employ technical skills to gain unauthorized access to computer systems and networks. This can include malicious activities, such as stealing data, defacing websites, or disrupting services.

The other terms provided have specific connotations that differentiate them from the general definition of a hacker. A white hat hacker, for instance, refers to a professional who uses their hacking skills for ethical purposes, typically to strengthen system security. A script kiddie is a less experienced hacker who relies on existing scripts or tools developed by others rather than writing their own code. Lastly, a security analyst is a professional focused on protecting an organization's information systems and typically works within the confines of legal and ethical standards, contrasting significantly with unauthorized access activities. Thus, the correct designation for someone breaking into systems or networks without permission is simply a hacker.