| 摘要 |
PROBLEM TO BE SOLVED: To provide a technology for detecting computer virus, and for properly filtering it. SOLUTION: The communication control device 10 includes: a first database 50 for storing the pattern of data included by computer virus; a position detection circuit 32 for acquiring communication data including a data file, and for extracting data with prescribed length from the prescribed position of the obtained communication data as object data to be compared so that when the data file is contaminated by computer virus, the data at the position into which the data of the computer virus are inserted can be included; a mask circuit 380 for masking any data other than the data at the position into which the data of the computer virus are inserted among the extracted object data; a retrieval circuit 30 for retrieving the pattern of the data included in the masked object data from the first database 50; and a processing performance circuit 40 for, when the pattern is included in the obtained data file, filtering the data file. COPYRIGHT: (C)2009,JPO&INPIT |
