Digital forensics
Digital forensics uses systematic methods to collect, examine, analyze, and report on digital evidence while protecting its integrity and documenting how it was handled.
Explain what the evidence supports
Forensic work goes beyond saving logs. NIST SP 800-86 separates collection, examination, analysis, and reporting. An investigator needs to identify relevant records, extract useful information, interpret it in context, and explain the resulting conclusion.
Evidence preservation protects the material used for that work. A timeline helps organize it. Neither replaces analysis of what an event actually means.
Reconstructing a recovery incident connects support records, account changes, and later activity. Reading sign-in evidence shows why a successful authentication and access to a particular document are different findings.
Make the reasoning reproducible
Keep the source records, collection method, relevant timestamps, and analysis steps. Another analyst should be able to understand which evidence supports each conclusion and where the gaps remain. Document handling through the appropriate chain-of-custody procedures; a forensic tool’s name alone does not establish reliability.
Record the filters and interpretation choices that affected the result. If your conclusion relies on a log covering the whole incident, check its time range and known gaps before presenting it as a complete account.
Digital evidence can contain live secrets and personal information. The HAR-file article explains what can be exposed in a diagnostic export and how to handle it within the investigation’s authorized scope.