Digital forensic models: A comparative analysis

With increase in new and ever evolving technologies like internet and information technology in the 21st century, the digital crimes are also increasing. the evidence of such crimes which are technology driven are in digital form and need to employ technology inclined techniques to uncover evidence that are admissible in court. Digital forensics applies digital investigation and analysis techniques to help in detection of digital crimes. Digital forensics provide the investigation techniques identification, preservation, collection, validation, analysis documentation and presentation of digital evidences. Different models have been presented to study the basics of digital forensics. Methods used for digital forensic investigation play an important role because inappropriate model choice may result in incomplete of missing evidence. In this paper we study different models. Their strengths and weaknesses and finally make a comparative study that which model is best among them.