Reading about packet captures and memory dumps only gets you so far. Digital forensics is a craft of pulling a defensible story out of messy evidence, and you build that skill by investigating cases yourself.
This guide covers seven free digital forensics labs and practice resources, from browser-based blue-team ranges to downloadable case files. Some are completely free, some have a free tier, and a few are wider security sites with a forensics section. I have flagged which is which using each platform’s own pages as of October 2026. Terms change, so confirm access on the official page before you sign up.
Safety first: some evidence packages contain live malware. Open them only in an isolated virtual machine with no personal data on it, and follow each platform’s rules.
7 Free Digital Forensics Labs
1. CyberDefenders: Question-Driven Blue-Team Labs
CyberDefenders hosts incident scenarios where you receive evidence and answer a series of questions that reconstruct what the attacker did. Labs touch areas such as endpoint forensics, network forensics and threat hunting. It also has a lab titled Szechuan Sauce, categorised as endpoint forensics.
- Free access: free labs are open to every account. Beyond those, the help center describes Trial Labs, a selection of Pro labs that free users can open for a one-time total of five hours across the life of the account. The rest of the library requires a Pro subscription.
- Best for: learners who can already filter a PCAP and read Windows event logs. The labs supply evidence and questions, not lessons.
2. Hack The Box Sherlocks: Guided DFIR Investigations
Sherlocks are Hack The Box’s defensive labs, simulating incidents across DFIR, SOC work, threat hunting and malware analysis. You download a password-protected archive of artifacts, then answer guided questions. Some scenarios call for free tools such as Eric Zimmerman’s utilities or a local Splunk or Elastic instance.
HTB’s own beginner recommendations include Meerkat, Bumblebee, Litter, Logjammer (event-log analysis) and Tracer.
- Free access: at launch in 2023, HTB said it would always keep eight Sherlocks on the free plan, with the premium ones in paid tiers. HTB has changed its plans since, so check which Sherlocks are free today.
- Best for: beginners to intermediates who want a guided structure inside a larger platform.
3. Blue Team Labs Online: Free Challenges, Paid Investigations
Blue Team Labs Online (BTLO) is a gamified platform covering incident response, digital forensics, security operations, reverse engineering and threat hunting. It has two layers. Free players get all the challenges: downloadable material such as memory dumps, phishing emails, packet captures and logs. PRO subscribers also get browser-based investigation labs, which the site says number 275.
Note the site’s own positioning: it is built for defenders who already know security tools, not as a beginner course.
- Free access: challenges are free. Investigations need PRO (priced in pounds on the site).
- Best for: intermediate learners who want offline practice without cloud limits.
4. LetsDefend: SOC Simulation With Forensic Elements
LetsDefend trains you to work like a SOC analyst: triage alerts, investigate, escalate. It is now part of the Hack The Box ecosystem, and its subscription details are published on HTB’s help center.
- Free access: the Basic plan includes free courses, a “Cybersecurity for Students” path, access to the SOC environment with limited analyst alerts, challenges, quizzes and one hour of hands-on labs per month. The DFIR role path sits in the top VIP+ tier.
- Best for: readers aiming at SOC roles. It is blue-team training first and forensics practice second.
5. Malware-Traffic-Analysis.net: PCAP Exercises
Malware-Traffic-Analysis.net is Brad Duncan’s long-running archive of traffic-analysis exercises. Each gives you a packet capture and a scenario; the page lists exercises from 2014 to October 2026. The author advises starting with the most recent ones, because older malware traffic reflects an earlier threat landscape.
The site also hosts Wireshark tutorials and workshop material. Format varies: many exercises come with answers, while at least one older exercise offers only hints.
- Free access: no account or paywall appeared on the pages I reviewed. Archives are password-protected zips, so treat them as potentially malicious.
- Best for: anyone starting network forensics. It is narrowly focused, which is its strength.
6. Root-Me: Forensics Inside a Hacking Platform
Root-Me is a non-profit hacking platform with challenges in 11 categories. Forensics is one of them, with tasks involving items like memory dumps, logs and disk images. The listing mixes French and English challenges.
- Free access: visitor access is free. A paid contributor membership unlocks newer community-made challenges, and a separate commercial offer targets schools and companies.
- Best for: CTF-style learners who want forensics puzzles alongside other security skills. It is not a DFIR-specific platform, and challenges give a goal rather than a lesson.
7. DFIR Madness: A Complete Case to Work Through
DFIR Madness offers Case 001, The Stolen Szechuan Sauce, created by James Smith. It supplies disk images, memory dumps and a packet capture, so you practise correlating evidence across sources the way a real investigation requires. Community walkthroughs, including one covering the network capture, exist if you get stuck.
- Free access: the case is listed as free in the Forensic Focus practice directory. This is a downloadable case rather than a hosted platform, so you provide your own tools, such as Autopsy, Volatility and Wireshark.
- Best for: intermediate learners ready for an end-to-end exercise. I could not confirm whether the site includes an official answer key.
Comparison Table
| Platform | Primary focus | Format | Level | Free access |
|---|---|---|---|---|
| CyberDefenders | Blue-team and DFIR labs | Browser labs, questions | Beginner to advanced (basics assumed) | Free labs plus limited Trial Labs; rest is Pro |
| HTB Sherlocks | DFIR, SOC, threat hunting | Downloadable artifacts, guided questions | Beginner to intermediate | A free subset; check current list |
| Blue Team Labs Online | Blue team, DFIR | Downloadable challenges; browser investigations | Intermediate | Challenges free; investigations paid |
| LetsDefend | SOC analysis | Simulated SOC alerts | Beginner to intermediate | Basic plan with limits; DFIR path paid |
| Malware-Traffic-Analysis.net | Network forensics | PCAP exercises | Beginner to intermediate | Free, no account seen |
| Root-Me | General hacking, with a forensics category | Challenges and flags | Mixed | Free visitor access |
| DFIR Madness | Full-case forensics | Downloadable evidence set | Intermediate | Listed free; bring your own tools |
How to Choose Among These Free Digital Forensics Labs
- New to forensics: start with Malware-Traffic-Analysis.net. One PCAP and Wireshark is a gentle first step.
- Want guided questions on logs and endpoints: try an easy Sherlock, such as one from HTB’s beginner list.
- Aiming at a SOC job: use LetsDefend’s free tier alongside the others.
- Comfortable with the basics and want volume: CyberDefenders and BTLO challenges.
- Want a capstone: DFIR Madness Case 001.
- Enjoy CTFs more broadly: Root-Me’s forensic category.
A Realistic Learning Path
- Build an isolated lab. Create a virtual machine for analysis, and add Wireshark, Autopsy and Volatility. Keep it off your main network.
- Analyze packet captures. Work through recent Malware-Traffic-Analysis.net exercises. Practise finding the infected host and the first malicious request.
- Read Windows logs. Use Logjammer-style Sherlocks or BTLO challenges to follow logons, process creation and persistence.
- Examine memory and disk evidence. Move to DFIR Madness Case 001 or CyberDefenders endpoint labs.
- Correlate and report. Build a timeline for each case and write a short summary: how access began, what happened next, and what evidence proves it.
Frequently Asked Questions
1. Where can I practice digital forensics for free?
All seven platforms above offer some free content, though the amount differs. Malware-Traffic-Analysis.net, DFIR Madness and Root-Me are the most freely accessible, while CyberDefenders, Sherlocks, BTLO and LetsDefend give a free portion and charge for the rest.
2. Are free DFIR labs suitable for beginners?
Some are. Malware-Traffic-Analysis.net and easy Sherlocks work well. CyberDefenders and BTLO assume you already know basic tools, so build those skills first.
3. Do I need to install forensic tools?
It depends. CyberDefenders runs labs in the browser. Downloadable material from BTLO, Sherlocks, Malware-Traffic-Analysis.net and DFIR Madness is analysed on your own machine, so you will need tools such as Wireshark.
4. Are these labs enough to become a forensic analyst?
They build practical habits but do not replace formal training, supervised experience or the credentials some employers require. Treat them as one part of your preparation.
5. Is it safe to open the evidence files?
Not automatically. Some archives contain malware. Always use an isolated virtual machine with snapshots, and never open evidence on your everyday computer.
Final Thoughts
Learning forensics is mostly a matter of repetition on real-looking evidence. These seven resources cover packet captures, logs, endpoints, and full cases at no cost to start. Pick one, set up a safe lab, and finish an investigation this week.
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