A memory file is a data file used by software applications, including AI systems, to temporarily store session history, user preferences, or contextual information. Unlike permanent storage files, memory files are typically held in volatile memory (RAM) and may not persist after the session ends. They enable applications to quickly access and update relevant data needed for ongoing operations, improving performance and user experience. In cybersecurity, memory files can be a target for attackers seeking sensitive session data, so protecting them is crucial. Proper management and secure deletion of memory files help prevent unauthorized access to confidential information.