What does seven days analysing 30,000 images suggest about evidence handling?

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Analysis of Digital Evidence in Ebit Lew's Case Highlights Time-Intensive Review Process

The seven-day period required to analyse over 30,000 images in the sexual harassment trial involving preacher Ebit Irawan Lew underscores the considerable time and specialised effort involved in handling digital evidence. This extensive review was necessary to sift through a large volume of data, identify specific content, and ensure its admissibility in court. The process involved not only examining each image but also managing data in its raw, unreadable format, necessitating the use of specific forensic software.
Forensic Unit Spent Two Days Accessing Raw Data

A significant portion of the seven-day analysis was dedicated to initial data processing. ASP Yip Chang Ching, an analyst with the Royal Malaysia Police Forensic Laboratory’s Computer Crime Investigation Unit, reported spending two of those days solely on opening the original data in its raw format, which was obtained from a phone. This initial stage is crucial as raw data requires specialised tools and expertise to be rendered into a usable and readable format for subsequent review.
Examination of Each Image Was Necessary for Identification

The core of the forensic analyst's task involved a meticulous review of each individual image. ASP Yip Chang Ching explained that he conducted the analysis by going through and examining each of the more than 30,000 pictures to identify sexually explicit content. This detailed, image-by-image scrutiny is a fundamental step in digital forensic investigations when the objective is to locate and categorise specific types of content within a large dataset.
Raw Data Requires Specialised Software for Interpretation

The complexity of analysing digital evidence is further highlighted by the nature of raw data. The witness elaborated that such raw data can only be read and interpreted using special software before it can be converted into a format that is readily understandable. This technical requirement means that digital forensic investigations rely heavily on sophisticated tools and trained personnel capable of operating them effectively.
Consistency Between Pen Drive Images and Forensic Report Noted

During the proceedings, the forensic analyst confirmed that the images observed on the pen drive were similar to those presented in the Digital Forensic Investigation Report. This observation is significant as it speaks to the integrity of the evidence chain, suggesting that the data extracted and presented in the report accurately reflected the content originally found on the storage device. The witness received the Digital Forensic Investigation Report in portable document format (PDF). Ebit Lew faces 11 charges, including defaming the modesty of a woman by sending obscene words and pictures via WhatsApp between March and June 2021, under Section 509 of the Penal Code.

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What does seven days analysing 30,000 images suggest about evidence handling?

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