What is FIM?

File Integrity Monitoring (FIM) is an internal security process that validates the integrity of operating system and application software files using cryptographic hash functions. FIM solutions monitor files and directories to detect unauthorized changes, such as additions, deletions, or modifications. When a change occurs, the FIM system alerts administrators, providing information about the change, who made it, and when it happened. FIM is commonly used for security compliance, change management, and malware detection.