🛡️Kryptós CronOS
12 Stages · Real CVEs · Hands-On CTF

Hack to
Defend.

Master cybersecurity through the same exploits that hit Equifax, LinkedIn, and the NHS. Real vulnerabilities. Real terminals. Real skills.

No setup. No installations. Open your browser and start hacking.

12
Training Stages
10
OWASP Top 10
5
Real CVEs
3,500+
Open Cyber Jobs (M)

How it works

Three steps from zero to hacker

01
📖

Read the briefing

Each stage opens with a full breakdown of the vulnerability — how it works, what it exploits, and the real attack that made headlines.

02
💻

Run the exploit

Drop into a simulated terminal. Use real commands to investigate, exploit, and capture the flag — built on the actual vulnerable environment.

03
🏆

Earn & rank up

Capture the flag, earn XP, unlock your badge, and climb the leaderboard. Each stage gates the next — no skipping.

The curriculum

Powered by real incidents. Built for retention.

View all stages →
🧱01

CIA Triad

Foundations
🤖02

AI Threat Detection

AI
💉03

SQL Injection

OWASP A03
🕸️04

Cross-Site Scripting

OWASP A03
🩸05

Heartbleed

CVE-2014-0160
🔓06

Broken Access Control

OWASP A01
🔑07

Auth Failures

OWASP A07
☠️08

Log4Shell

CVE-2021-44228
💀09

WannaCry

CVE-2017-0144
🌐10

SSRF

OWASP A10
💥11

Equifax / Struts

CVE-2017-5638
🗄️12

MongoDB Misconfiguration

OWASP A05

Built different

Not another video course. Not another quiz bank.

🎯

Real exploit environments

Every CTF challenge is modeled on the actual server, code, or config from the real incident. Not a simulation of a simulation.

📊

Gamified progression

Linear stage gating, XP, badges, and a live leaderboard. The same mechanics that make games addictive — applied to security training.

📖

Reference always open

The full briefing — attack diagram, technical breakdown, incident story — is one click away while you're inside the terminal.

Ready to start hacking?

Free to start. No credit card. No setup. Just open a terminal and go.

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