Applying a stepwise forensic approach to incident response and computer usage analysis

While traditional digital investigation is limited to cyber crimes, now it is an essential procedure on most of civil and criminal case. With the proliferation of the digital investigation in this situation, the need for the timely identification, analysis and interpretation of digital evidence is becoming more crucial. The general method of investigating the suspect's computer is laborious, time-consuming, complicated tasks and requires specialty on the part of forensic experts. In particular cases, such as child abduction, missing or exploited persons, time is of the essence and rapid incident response is necessary. But the increase in capacity of storage media made this method to take much longer time. Therefore, we need new process model to collect crucial evidence quickly and investigate these cases rapidly. The Stepwise Forensic Process Model (SFPM) provides stepwise and in-situ approach for providing incident identification, acquisition, analysis. The SFPM suggest a new investigational model for selecting the target and analyzing the relevant evidences only.