摘要 |
PROBLEM TO BE SOLVED: To provide a file monitoring system to detect an abnormal file including an unauthorized/destructed file, etc., and to eliminate it. SOLUTION: The file monitoring system is provided with an extension deciding means 11, a format deciding means 12, a form deciding means 13, an abnormal file detecting means 14 and an abnormal file deleting means 15 and is constituted so that the external identifiers deciding means 11 checks what kind of external identifier the file have, when the file as any of set external identifiers, the format deciding means 12 judges whether or not the file has a format to coincide with the external identifier, sorts it, when the file has none of the set external identifiers, the form deciding means 13 decides whether the file is in a text form or not (binary form), sorts it, as for the file sorted into a section applicable to the abnormal file, the abnormal file detecting means 14 detects it and the abnormal file deleting means 15 deletes it. |