Investigations9 min readReviewed April 23, 2026
Quick actions
- Clarify what the evidence is, where it came from, and how it was preserved.
- Separate collection facts from interpretation opinions.
- Prepare a simple timeline of acquisition, examination, disclosure, and presentation.
- Anticipate authentication, hearsay, scope, and expert qualification questions.
Core concepts
- Integrity: whether the evidence was protected from unauthorized or unexplained change.
- Authentication: whether the proponent can show the item is what they claim it is.
- Chain of custody: who had control of the evidence and when.
- Metadata: data about data, such as timestamps, file paths, account IDs, device information, or location signals.
- Correlation: comparing device, cloud, witness, transaction, and platform evidence to test meaning.
Questions for case preparation
- What was collected and what was not collected?
- Was the original preserved, and was analysis conducted on a copy when appropriate?
- Which tools or processes were used, and are they documented?
- What limitations or alternative explanations should be disclosed?
- Can the examiner explain the result in plain language?
Courtroom presentation
Digital evidence can overwhelm a factfinder if presented as a pile of screenshots and logs. Strong presentation explains what matters, why it matters, and how it was preserved, while avoiding overstatement.
Training audiences
- Prosecutors preparing technology-enabled cases.
- Judges evaluating digital evidence issues.
- Investigators writing reports that will be reviewed in court.
- Agency leaders building better documentation practices.
Important note
This resource is for education and planning. It is not legal advice, clinical advice, or a substitute for agency policy, school policy, legal counsel, emergency services, or trained investigative support.