maintaining an audit trail, and overall responsibility for adherence to legal standards and principles in
digital evidence handling. Despite the importance placed by digital evidence professionals on adhering
to guidelines for maintaining the authenticity and integrity of digital data, courts may sometimes
overlook these considerations. The failure to understand the significance of digital forensics in data
seizure may undermine the integrity of legal proceedings. Implementing best practices, such as
generating hash values upon forensic imaging of seized hard drives, could help ensure the integrity of
digital evidence, but such practices may not always be fully appreciated or utilized by courts or defense
teams.
2.2 Identifying Electronic Evidence
The discovery of evidence in digital form can often be the initial indication of wrongdoing, prompting
the need for investigation. Initiating an investigation can inadvertently alter electronic evidence.
Having appropriate procedures in place to initiate and conduct investigations is essential. In both civil
and criminal cases, there are obligations to disclose relevant documents, and investigating authorities
are expected to adhere to recognized guidelines. ACPO Good Practice Guide for Digital Evidence
outlines four main phases for handling evidence: collection, examination, analysis, and reporting,
which may be augmented with an initial assessment phase in light of forensic triage techniques.
2.3 Gathering of Electronic Evidence
Once the need to gather digital evidence is determined, specific procedures should be followed to
guide digital evidence professionals in handling the scene and identifying and seizing evidence if
required. It is now standard practice to document the scene through photography or video recording,
including capturing the layout of hardware. The investigator must then assess which physical evidence,
such as computers or storage devices, should be retained, with reference to established guidelines. It's
crucial to prevent tampering with hardware or networks and to ensure that only properly trained
personnel handle computers designated for seizure.
One significant challenge with digital evidence is its susceptibility to alteration or destruction. Digital
devices, being volatile, can lose crucial data when powered off. Arresting suspects who are physically
present at a computer requires special care, as they may attempt to delete or disrupt incriminating files.
2.4 Copying Electronic Evidence
Copying electronic evidence involves adhering to several key principles outlined in the ACPO Guide.
These include: Avoiding any actions that may alter data relied upon in court, ensuring that those
10