CIH

CIH, or Code Integrity Hashing, is a security technique used to verify that software files or system components haven't been tampered with. It involves calculating a unique digital fingerprint, or hash, for each file. When the system runs, it compares these hashes to known, trusted values. If there's a mismatch, it indicates the file might have been altered maliciously or corrupted, triggering alerts or preventing the file from executing. This process helps maintain the integrity and security of the system by ensuring only approved, unchanged files are active.