Method and device for hierarchical extraction of security threat information

The invention discloses a method and a device for hierarchical extraction of security threat information, which can be applied to the field of natural language processing and the field of information security. The method comprises the following steps: reading security threat information; when a first word conforming to a relation index exists in the security threat information, positioning a position area of the first word; predicting a relation type of the first word; when the relation type corresponds to the relation type set, scanning all second words in the position area; the relation type set comprises at least one relation type; and predicting an entity type corresponding to the first word according to the second word. Thus, the relationship type in the security threat information is determined firstly, and then the entity type corresponding to the relationship type is predicted by using the relationship between the entity type and the relationship type, so that the problem of low accuracy of intelligen