Digital › Module 8 › Lesson 3
Legal Ethics
Legal and ethics literacy for DFIR — authority, privacy, spoliation, and refusal lines on $DFIR_LAB practice reporting.
Visual · t26_legal_ethics
Legal ethics = authority privacy spoliation refuse. $DFIR_LAB. Original Cyberlium.
Opening
Without legal authority and ethics, your timeline is just a spreadsheet — and maybe evidence of a crime you committed.
Legal ethics literacy: legal authority (consent, warrant, contract, employer policy scope), privacy minimization (collect only needed, redact PII), spoliation (never delete/alter/plant evidence), dual-role clarity (analyst vs advocate), refusal documentation when scope exceeds authority. Module 1 legal authority extends to reporting: state authority type in report scope section. Cyberlium on $DFIR_LAB — NOT accessing roommate/employer/stranger devices without authority, NOT 'finding evidence' by planting files, NOT withholding exculpatory rows, NOT hacking back to validate hypotheses. When uncertain — stop and escalate to mentor/supervisor. Lab row: three NEVER lines tied to unauthorized access, tampering, and false report submission.
1. Authority types
Consent, warrant, contractual IR scope, lab brief RoE — name which applies to $DFIR_LAB row.
Practice cases labeled practice — not implied real warrant.
Command guide
Try these commands — Authority types
═══ TOOLS & WEBSITES ═══ Browse / read these (authorized learning only — stay in YOUR lab / program scope)
CISA IR — https://www.cisa.gov/topics/cybersecurity-best-practices/incident-response (report to stakeholders) SANS DFIR — https://www.sans.org/cyber-security-skills/digital-forensics/ RFC 3227 — https://www.rfc-editor.org/rfc/rfc3227
═══ INSTALL ═══
Linux (Debian/Ubuntu):
Command — copy this
sudo apt install curl
macOS: Built-in
Windows: Built-in (PowerShell: Invoke-WebRequest)
═══ LINUX / macOS ═══
Command — copy this
export LAB_DFIR=${LAB_DFIR:-$HOME/cyberlium-lab/t26-dfir}
cat > "$LAB_DFIR/report/findings-draft.txt" <<'EOF'
finding 1: repeated auth failures in fake-log-lines (lab simulation)
finding 2: sample.bin contains CYBERLIUM string — tagged non-malicious lab data
finding 3: lo pcap shows localhost traffic only — no stranger network capture
scope: YOUR lab artifacts — never production systems
EOFCommand — copy this
grep -E 'finding|scope' "$LAB_DFIR/report/findings-draft.txt" curl -sS https://www.cisa.gov/topics/cybersecurity-best-practices/incident-response | head -5
Primary tools to practice this lesson: grep, curl. Reference sites: CISA IR (https://www.cisa.gov/topics/cybersecurity-best-practices/incident-response); SANS DFIR (https://www.sans.org/cyber-security-skills/digital-forensics/); RFC 3227 (https://www.rfc-editor.org/rfc/rfc3227). Run every command in the box — install first, then the usage lines — only on YOUR lab / program scope.
2. Spoliation and privacy
Read-only analysis, hash verification, no log clearing, redact PII in share exports.
Document what you did not collect and why — minimization is professional.
3. Refusal lines
Stop when scope unclear; document refusal in notes — do not proceed 'just to finish lab.'
Unauthorized device access is refused everywhere in Topic 26.
4. What you ship: legal ethics checklist
Authority types + spoliation trio + privacy minimization + three NEVER lines.
5. What you record before the next lesson
Legal ethics checklist path.
6. Wrong vs right: tampering evidence vs chain of custody
Worked failure — same MSF word, opposite target. Right never needs a café Wi-Fi or classmate laptop.
Wrong
Image roommate phone 'because they might be guilty' without consent or warrant.
Right
Legal ethics checklist for $DFIR_LAB reporting. Next: Report Lab.
Mission: legal ethics checklist
1) Name four authority types. 2) Define spoliation in one line. 3) Privacy minimization rule. 4) Three NEVER lines for Topic 26.
Stuck? Ask Cyberlium AI Mentor
Ask Mentor: “Practice case — how to label authority?”
Knowledge Check
APPLY: DFIR ethics require:
Multiple choice
Knowledge Check
APPLY: True or False: Unauthorized device access is lab.
True or False
Knowledge Check
APPLY: Privacy minimization means:
Multiple choice