OBD-II provides vehicle diagnostic data including engine parameters, fault codes, freeze frame data, VIN, and sensor readings. Aftermarket dongles may store trip data and GPS.
What Is OBD-II / Vehicle Diagnostic Forensics?
OBD-II provides vehicle diagnostic data including engine parameters, fault codes, freeze frame data, VIN, and sensor readings. Aftermarket dongles may store trip data and GPS.
Understanding this artifact is essential for forensic investigations in this domain. Its unique characteristics provide evidence that may not be available from any other source.
This artifact should be considered in any investigation involving vehicle systems or applications. Collection timing and method significantly impact evidence availability.
Location & Format
| Property | Detail |
|---|---|
| Primary Path | OBD-II port + aftermarket dongle app data |
| Format | CAN bus / J1850 / ISO 9141 protocols |
| Retention | ECU: persistent; dongles: varies |
What It Reveals
This artifact provides answers to investigative questions specific to vehicle forensics, including activity timelines, user interactions, and behavioral patterns.
Forensic Use Cases
1. Incident Response
During initial response, this artifact helps establish scope, timeline, and affected systems.
2. Criminal Investigation
Law enforcement may leverage this artifact to establish user activity and digital footprints.
3. Civil Litigation
In civil matters, this artifact provides evidence of data access and user behavior.
Acquisition Methods
Evidence from vehicle sources may require specialized tools, legal process, or vendor cooperation. Always document acquisition and maintain chain of custody.
Parsing Tools & Analysis
Analysis tools vary by platform and data format. Open-source tools, commercial suites, and custom scripts may all be applicable.
Retention & Persistence
| Property | Detail |
|---|---|
| Default Retention | ECU: persistent; dongles: varies |
Anti-Forensics Resilience
Anti-forensics effectiveness varies for vehicle artifacts. Cloud-synced data may persist beyond the user control surface.
MITRE ATT&CK Detection
Consult MITRE ATT&CK Data Sources for relevant technique mappings.
Related Artifacts
Cross-correlate with related artifacts in the Forensic Artifacts Encyclopedia.
References
- SANS Institute — DFIR Cheat Sheets
- 13Cubed — Digital Forensics Blog
- NIST SP 800-86 — Forensic Integration Guide
- ForensicFocus — Digital Forensics Community
- Awesome Forensics — Curated Resources
Mjolnir Security — Digital Forensics & Incident Response
Mjolnir Security provides 24/7 incident response, digital forensics, and expert witness testimony.
mjolnirsecurity.com — 24/7: +1 833 403 5875