Train your OSINT skills with free browser-based challenges that include automatic answer checking.

CipherStick

CipherStick – Free OSINT Puzzles and Challenges

What’s OSINT?

OSINT—short for Open Source Intelligence—is basically finding cool info from stuff anyone can access online. It’s like digital detective work, minus the trench coat. Journalists use it to check facts, security experts track threats with it, and curious folks use it to dig up surprising stories hiding in plain sight.

All you need is your browser. You poke around websites, peek at metadata, chase down digital crumbs—and you don’t need to be a hacker. Just sharp eyes and some solid logic.

How It Works

Each puzzle is just a single file that runs right in your browser. No accounts, no logins. Just open it, start exploring, and follow the clues—just like a real OSINT pro would.

It’s great for class demos, hacker workshops, or just leveling up your skills in private.

Why Certificates Are Cool

When you solve a puzzle, you get a PDF certificate on the spot—name, date, title, boom.

This is great for anything - from bragging to a friend to framing on the wall!

Choose Your Challenge

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NEW!

Project Find Rocky  (Extreme)

A hard ARG/OSINT challenge based on Project Hail Mary.

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The Lazarus Fragment  (Extreme)

The hardest CipherStick challenge yet.

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The Fall of Enoch Hayes  (Extreme)

The first advanced puzzle.

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The Abyss Protocol  (Extreme)

Sequel to "The Fall of Enoch Hayes"

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The Digital Enigma  (Hard)

For intermediate players—clever clues and twists to keep you thinking.

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The Vanishing Journalist  (Medium)

Great for beginners—learn the basics of OSINT with a simple but engaging case.

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Disclaimer — All characters, organizations, and events featured in these puzzles are entirely fictional. They are crafted to simulate real-world OSINT investigations for educational purposes only.


An X/Twitter account will be needed to complete most puzzles.

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Frequently Asked Questions

Yep! Every puzzle is 100% free to play—no account, no signup!

Nope. Everything runs right in your browser. Just click and start the challenge.

Absolutely. It's perfect for OSINT demos, CTF warmups, and even homeschool use.

You can buy me a coffee or share CipherStick with a friend!

It depends! I like to aim for once a month, sometimes it takes longer. Follow us or check back often to catch the newest drops.

Questions, Comments or Suggestions? Contact Us!