The incident you described involves a "data breach" at a major video game "software" company, where the incident involves the unauthorized transfer of a sensitive file to an outside source (a leak) describes what has been done to the file in question is "exfiltration."
Exfiltration refers to the unauthorized transfer or leakage of sensitive data from an organization to an external destination or recipient. In this situation, the data loss prevention (DLP) terminology that describes what has been done to the file in question is "exfiltration. It is a cybersecurity term used to describe the unauthorized transfer or theft of sensitive data from an organization's network or system to an external destination or recipient.
Data loss prevention (DLP) is a set of technologies and processes that aim to protect sensitive data from being lost, stolen, or exposed. DLP solutions are designed to detect, monitor, and prevent unauthorized access to sensitive data within an organization's network.