The present disclosure provides a method and a system for generating a decision tree that tests security event files. The method comprises receiving attack data comprising a plurality of attack execution operations and determining threat attribute data based on the attack data. The method also comprises generating a decision tree using the threat attribute data. The decision tree includes at least one first node and a plurality of second nodes connected to the at least one first node. A first nodal data may be generated and assigned to each second node based on one or more threat attributes associated with the threat attribute data. In response to receiving a security event file, the method executes one or more security tests, using the decision tree, for the security event file.