Full Explanatory Reference Summary
1. Course Identity
| Field | Detail |
|---|---|
| Course Name | The CSI Linux Certified Investigator (CSI CI) |
| Platform | EchothisLabs |
| Course ID | 71 (Section 1) |
| Format | Online, self-paced, module-based |
| Level | Entry to intermediate |
| Focus | Practical digital investigation using CSI Linux |
| Contact | support@csilinux.com |
Course Description (from platform):
A practical entry point into CSI Linux designed to help investigators use the platform for case management, online evidence collection, computer forensics, incident response, and specialized investigative analysis.
Important Note: CSI Linux is not an attack distribution (not Kali, Parrot, or BlackArch). It is purpose-built for investigators and forensic/OSINT work.
2. Course Structure — 27 Modules
🗂️ Part 1 — Foundations (Modules 1–6)
| # | Module | Focus |
|---|---|---|
| 1 | About the CSI Linux Certified Investigator | Orientation to the cert and role |
| 2 | Starting the Training | Mindset — investigator distro, not attack distro |
| 3 | Downloading and Installing CSI Linux | Installation and setup |
| 4 | Setting Up CSI Linux | User setup, updates, security config |
| 5 | Network Troubleshooting | Connectivity, DNS, VPN, network diagnostics |
| 6 | System Settings | YAD tool, desktop, preferences |
🔍 Part 2 — Investigation Core (Modules 7–12)
| # | Module | Focus |
|---|---|---|
| 7 | The Case Management System | Case creation, evidence logging, chain of custody |
| 8 | The Importance of Anonymity | OPSEC, sock puppets, attribution safety |
| 9 | OSINT & Actionable Intelligence | Collection → verification → analysis |
| 10 | Secure Communication Tools | PGP, encrypted messaging, secure email |
| 11 | How to Connect to TOR | Anonymous browsing, .onion services |
| 12 | Forensic Web Evidence Collection | Page capture, hashing, metadata, integrity |
🧪 Part 3 — Forensics & Analysis (Modules 13–24)
| # | Module | Focus |
|---|---|---|
| 13 | Online Video Collection | Download, preserve, verify video evidence |
| 14 | Geolocation | EXIF, geotags, mapping, location verification |
| 15 | Computer Forensics | Imaging, hashing, file system analysis |
| 16 | 3rd Party Commercial Apps | OSINT tools, online evidence capture |
| 17 | Forensic Data Recovery | Storage vs. recovery, deleted file retrieval |
| 18 | Incident Response | DFIR phases, triage, containment, docs |
| 19 | Memory Forensics | RAM analysis, Volatility, volatile artifacts |
| 20 | Malware Analysis | Static vs. dynamic, sandboxing, IOCs |
| 21 | Encryption & Data Hiding | Encryption, steganography, hidden volumes |
| 22 | SIGINT, SDR & Wireless | Software-defined radio, signal capture |
| 23 | Threat Intelligence | Feeds, actors, TTPs, tactical/strategic CTI |
| 24 | Threat Hunting | Proactive IR, MITRE ATT&CK, hypothesis-driven |
🏁 Part 4 — Wrap-Up (Modules 25–27)
| # | Module | Focus |
|---|---|---|
| 25 | Extra Tools | Additional utilities for practice/real investigations |
| 26 | Course Completion | Recap and next steps |
| 27 | The Exam | Final certification assessment |
3. Key Concepts & Terminology
- CSI Linux — Linux distro built for investigators, not attackers
- CSI CI — CSI Linux Certified Investigator
- DFIR — Digital Forensics and Incident Response
- OPSEC — Operational Security (protecting identity and sensitive info)
- OSINT — Open-Source Intelligence
- IOC — Indicator of Compromise
- TTP — Tactics, Techniques, and Procedures
- Chain of Custody — Documented evidence handling record
- YAD — Yet Another Dialog (GUI dialog tool in CSI Linux)
- TOR — The Onion Router (anonymity network)
- EXIF — Metadata embedded in photos/videos
- SDR — Software-Defined Radio
- SIGINT — Signals Intelligence
- CTI — Cyber Threat Intelligence
- MITRE ATT&CK — Framework of adversary TTPs
- Volatility — Tool for memory forensics
4. Suggested Study Path
Recommended sequence:
- Foundations (1–6) — Install, configure, and understand the platform.
- Investigation Core (7–12) — Master case management, OPSEC, OSINT, and secure comms.
- Forensics & Analysis (13–24) — Deep dive into disk, memory, malware, IR, and threat intel.
- Wrap-Up (25–27) — Practice with extra tools, review, and take the exam.
Pacing options:
- 7-day sprint: ~4 modules/day
- 14-day plan: ~2 modules/day
- 30-day plan: ~1 module/day with hands-on lab time
Hands-on priority modules:
- Module 3–4 (installation/setup)
- Module 7 (case management)
- Module 11 (TOR)
- Module 15 (computer forensics)
- Module 19 (memory forensics)
- Module 24 (threat hunting)
5. Module Flashcards (Quick Reference)
Full flashcard set: 27 module cards + 5 bonus term cards.
Part 1 — Foundations
- Q: What is CSI CI? → A: A practical cert for using CSI Linux in case management, evidence collection, forensics, IR, and investigative analysis.
- Q: Is CSI Linux an attack distro? → A: No — it’s for investigators, not attackers.
- Q: Purpose of Module 3? → A: Download and install CSI Linux.
- Q: What does Module 4 cover? → A: OS basics, user setup, updates, security config.
- Q: Why is network troubleshooting important? → A: To ensure connectivity, DNS, VPN, and OSINT tools work reliably.
- Q: Tool highlighted in System Settings? → A: YAD (Yet Another Dialog).
Part 2 — Investigation Core
- Q: Why is case management essential? → A: Structured workflow, evidence logging, chain of custody, documentation.
- Q: Purpose of OPSEC/anonymity? → A: Protect investigator identity and investigation integrity.
- Q: Goal of OSINT? → A: Collect, verify, and analyze public info into actionable intelligence.
- Q: Why secure comms? → A: Encrypt sensitive communications and prevent interception.
- Q: What is TOR used for? → A: Anonymous browsing and accessing .onion hidden services.
- Q: What must be preserved in web evidence? → A: Full page, metadata, timestamps, and a hash.
Part 3 — Forensics & Analysis
- Q: Goal of online video collection? → A: Download, preserve, verify video with metadata.
- Q: Techniques in geolocation? → A: EXIF, geotags, mapping tools, cross-referencing.
- Q: Core steps of computer forensics? → A: Imaging → hashing → analysis → documentation.
- Q: Why 3rd party commercial apps? → A: Extend CSI Linux with specialized OSINT and evidence-capture tools.
- Q: Storage vs. recovery? → A: Storage = where data lives; recovery = retrieving deleted/hidden/damaged data.
- Q: Key IR phases? → A: Preparation, identification, containment, eradication, recovery, lessons learned.
- Q: Memory forensics + tool? → A: Analyzing RAM artifacts; commonly Volatility.
- Q: Static vs. dynamic malware analysis? → A: Static = no execution; dynamic = run in sandbox to observe behavior.
- Q: Two ways data is hidden? → A: Encryption and steganography.
- Q: SIGINT vs. SDR? → A: SIGINT = intelligence from signals; SDR = tool to capture/analyze radio signals.
- Q: What is threat intelligence? → A: Evidence-based knowledge about threats, actors, and TTPs.
- Q: What is threat hunting? → A: Proactive, hypothesis-driven search for threats that automated defenses missed.
Part 4 — Wrap-Up
- Q: Purpose of Extra Tools? → A: Additional utilities for practice or real investigations.
- Q: What does Course Completion provide? → A: Recap and next-step guidance.
- Q: Final step of CSI CI? → A: Passing The Exam.
Bonus Terms
- B1: DFIR = Digital Forensics and Incident Response.
- B2: IOC = Indicator of Compromise.
- B3: TTP = Tactics, Techniques, and Procedures.
- B4: Chain of custody = documented evidence handling record.
- B5: OPSEC = Operational Security.
6. Exam Preparation Tips
- Follow the module order — the course builds sequentially.
- Practice every tool inside CSI Linux as you go.
- Use the comic (Echothis Comics 01 – Digital Forensic Principles) as a light review.
- Build a cheat sheet for: case management, forensics tools, OSINT/OPSEC workflows, TOR setup.
- Focus on high-weight domains: case management, OPSEC/anonymity, forensics fundamentals, IR, threat intel.
- Revisit announcements — new content and certs are added regularly.
- Engage the community — contact support@csilinux.com for questions.
7. Core Domains to Master (Checklist)
- □ Case management & chain of custody
- □ OPSEC / anonymity / TOR
- □ OSINT collection & verification
- □ Disk, memory, and mobile forensics
- □ Incident response & threat hunting
- □ Encryption, malware, and data recovery
- □ Secure communications
- □ Geolocation & video evidence
8. Summary
The CSI Linux Certified Investigator course on EchothisLabs is a 27-module, hands-on training program that transforms learners into capable digital investigators. It balances foundational Linux skills with advanced forensic and intelligence techniques — from installing CSI Linux and managing cases, to conducting OSINT, analyzing memory and malware, and hunting threats. Unlike offensive security distros, CSI Linux is purpose-built for defensive, investigative, and forensic work, making this certification ideal for aspiring DFIR analysts, OSINT researchers, and digital forensics professionals.