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The field of digital forensics still lacks formal process models that courts can employ to determine the reliability of the process followed in a digital investigation. The existing models have often been developed by digital forensic practitioners, based on their own personal experience and on an ad-hoc basis, without attention to the establishment of standardisation within the field. This has prevented the institution of the formal processes that are urgently required. Moreover, as digital forensic investigators often operate within different fields of law enforcement, commerce and incident response, the existing models have often tended to focus on one particular field and have failed to consider all the environments. This has hindered the development of a generic model that can be applied in all the three stated fields of digital forensics. To address these shortcomings, this chapter makes a novel contribution by …