Table A21. <D-3-2> Recovery time after infringement incident metric.

Item Description
Evaluation item Information security(D) >> Recovery of infringement incident(D.3)
Metric <D-3-2> Recovery time after infringement incident
Explanation Average time to recovery after infringement incident
Measurement method X = Average time to recovery after the infringement incident
Y= X − T arg e t   v a l u e T arg e t   V a l u e × 100 (excess ratio of time to recovery)
Data gathering method (Data sources) ■ System ■ Data
□ Questionnaires ■ Interview
※ Measure the occurrence of infringement incident from target IS and the recovery time from related reports