Digital Forensic Methodology
Digital forensics is a science, not merely an IT process. Our 8-step methodology ensures that all evidence is collected, preserved, and analysed using repeatable, scientifically validated procedures designed to withstand the highest levels of legal scrutiny.
8
Methodical Steps
100%
Peer Reviewed
27037
ISO/IEC Aligned
The 8-Step Forensic Process
We adhere strictly to international best practices, ensuring that no step is bypassed from the moment of initial instruction through to giving evidence in court.
1
Identification
Carefully identifying all potential sources of digital evidence relevant to the instructions, including obscured, cloud-synced, or proprietary systems before any interaction occurs.
2
Preservation
Securing the evidence to prevent any alteration. This involves establishing strict chain-of-custody protocols and isolating devices from networks to prevent remote wiping.
3
Acquisition
Creating exact, bit-for-bit forensic images (or logical extractions where physical is impossible) using hardware write-blockers to ensure the original evidence is never modified.
4
Examination
Processing the acquired data to extract relevant artifacts. This includes recovering deleted data, decrypting files, and parsing complex file system structures into a readable format.
5
Analysis
Applying technical expertise to understand the recovered data. We reconstruct timelines, determine how data was created or modified, and trace the origin of specific artefacts.
6
Interpretation
Translating raw technical findings into factual conclusions that address the legal or investigative questions posed in the client’s original instructions.
7
Reporting
Drafting clear, transparent, and court-admissible expert reports. We document all steps taken, tools used, findings, and crucially, any limitations or margins of error.
8
Presentation
Providing expert testimony in court. Our practitioners communicate complex technical concepts clearly to judges and juries while withstanding robust cross-examination.
Core Forensic Principles
Our methodology is underpinned by fundamental scientific principles that guarantee the evidentiary weight of our findings.
Evidence Integrity
The cardinal rule of digital forensics: no action taken by an examiner should change data held on a computer or storage media which may subsequently be relied upon in court.
Hardware Write-Protection
During acquisition, original media is always connected through specialized hardware write-blockers that physically prevent the operating system from altering even a single bit of data.
Hash Verification
We generate cryptographic hashes (MD5, SHA-256) of the original evidence and the forensic copy. If the hashes match exactly, mathematical certainty dictates the copy is identical to the original.
Repeatability
Our processes are scientifically reproducible. Another qualified examiner following our documented steps on the same evidence must arrive at the exact same technical result.
Comprehensive Documentation
We maintain contemporaneous examiner notes and comprehensive audit trails (tool logs) detailing every action performed, ensuring absolute transparency.
Transparent Limitations
We openly declare the boundaries of our findings. If data is unrecoverable, or an artefact’s meaning is ambiguous, we state this clearly rather than overstating the evidence.