TRACKBACK BLOCKING SYSTEM AND TRACKBACK BLOCKING METHOD

PROBLEM TO BE SOLVED: To provide a trackback blocking system and a trackback blocking method which can automatically block fraudulent trackback. SOLUTION: The trackback blocking system has: a spool management part 204 causing a storage part 203 to temporarily store a received trackback (TB); a TB deletion part 307 for deleting the TB from a blog; a user history management part 309 for registering TB deletion history in a user history list; a highly frequent deletion user extraction part 310 for extracting a user who deletes TBs highly frequently on the basis of the TB deletion history; a TB extraction part 205 for extracting a TB whose transmission destination is a blog of a highly frequent deletion user; a TB addition part 306 for adding a TB to the blog of the highly frequent deletion user; a fraudulent TB judgment part 311 for judging whether a TB is fraudulent or not based on whether the TB is deleted from the blog to which the TB is added; a fraudulent TB management part 105 for registering the TB judged as a fraudulent TB in a fraudulent list; and a filter part 104 for transmitting only the TB whose transmission source does not coincide with that of any of fraudulent TBs registered in the fraudulent list out of TBs received thereafter. COPYRIGHT: (C)2009,JPO&INPIT