| 摘要 |
A content protection device includes: a use restriction definition information storage that stores one or more pieces of use restriction definition information in which at least use restriction conditions to restrict use of contents are defined; a comparison unit that monitors writing of an access log into an access log accumulation unit, and that when the access log is written into the access log accumulation unit, compares a use manner in which content specified by the access log is used and the use restriction conditions included in the use restriction definition information; and a restriction unit that if a result of the comparing by the comparison unit indicates that the use manner meets any of the use restriction conditions, restricts at least a same kind of use as the use manner.
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