Table A17. <D-1-1> Intrusion detection ratio in advance metric.

Item Description
Evaluation item Information security(D) >> Detection level (capability) of infringement incident(D.1)
Metric <D-1-1> Intrusion detection ratio in advance
Explanation The ratio of detecting the infringement incident in advance
Measurement method X= # o f d e t e c t i o n i n a d v a n c e t o t a l # o f i n f r i n g e m e n t i n c i d e n t
Y= X T a r g e t V a l u e × 100 (satisfaction ratio of detection in advance)
Data gathering method (Data sources) ■ System   ■ Data
□ Questionnaires   □ Interview
※ Measure the total number of infringement incident from target IS and the number of detection in advance from the data of Computer Emergency Response Team (CERT)