Abstract
Over the past twenty years, Secure Digital memory cards have become the most popular digital storage media. Therefore, forensic experts need to develop forensic techniques to enable recovery of data, especially from cards severely damaged by accidents, air crashes, terrorist attacks or deliberate attempts by criminals to destroy evidence. The paper discusses the non-invasive and invasive diagnostics available to forensic experts, with descriptions of the necessary equipment, including binocular microscopes, X-Ray equipment, scanning acoustic microscopes, chemical benches, and, for the first time, infrared cameras. All of these techniques can be used to methodically determine the best treatment in order to repair damaged storage media and extract data from them. The main contributions of the paper include the development of an innovative systematic forensic protocol for diagnostics on damaged cards, which involves a decision-making diagram. Finally, a concrete case study is presented using the new forensic decision diagram-based protocol and the panel of techniques available to diagnose a card damage.
Highlights
With the evolution of technology and lifestyles, many people have one or more Internet of Things (IoT) devices [1]
In the context of forensic investigations, experts are increasingly collecting evidence from removable memory devices, the popular Secure Digital (SD) cards. These cards are used everywhere, including by criminals
Following air crashes, terrorist attacks or explosions, the judges in charge of investigations are systematically requesting the extraction of digital data to understand the crime scene from videos that may have been filmed during the incidents
Summary
With the evolution of technology and lifestyles, many people have one or more Internet of Things (IoT) devices [1]. System manufacturers have integrated slots for Secure Digital (SD), mini-SD or micro-SD cards (Figure 1) to better adapt to the needs of users and to increase the storage capacity of the entire spectrum of electronic devices. Thomas-Brans et al.: New diagnostic forensic protocol on damaged secure digital memory cards a user making a video in 4k high resolution will need a large storage capacity and a fast writing speed to avoid the phenomenon of latency [4].
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