CyberSim OS is an offline-first, browser-native cybersecurity simulation platform designed for ordinary end users. Learners enter a convincing fictional enterprise desktop, perform routine workplace activities, investigate ambiguous events, encounter realistic threats (credential phishing, malicious attachments) and legitimate false flags, receive a 7-axis behavioral after-action assessment, and earn cryptographically verifiable completion certificates (*.cybercert).

Key Features

Convincing Fictional Desktop: Original Windows-like theme with draggable/resizable windows, active/inactive focus states, taskbar, Start launcher, simulation clock, and system toast notifications with audio cues.
Core Simulated Workplace Applications:
- Inlook: Email client with header inspector (RFC sender vs. friendly name), link hover destination tooltips, phishing report workflow, and reply/delete actions.
- Navigator: Web browser supporting intranet directories, policy hubs, and external spoofed credential-harvesting portals.
- Files: Virtual filesystem managing Documents, Downloads, and Company Shared folders.
- Doc Viewer: Lightweight renderer for spreadsheets (.xlsx), policies (.pdf), and memos.
- Security Center: Endpoint protection dashboard, real-time alert logs, incident report confirmations, and delayed alert triggers.
Realistic Decision Model: Teaches "Observe → Investigate → Verify → Decide → Act" rather than "Strange = Malicious". False flags and legitimate urgent notices test discernment.
Delayed Consequences Engine: Unsafe actions (e.g. submitting credentials on a phishing page) trigger delayed consequence alerts in Security Center without giving immediate arcade-like game-over feedback.
7-Axis Behavioral Scoring:
1. Threat Detection (20 pts)
2. Investigation & Evidence Gathering (20 pts)
3. Safe Handling (15 pts)
4. Independent Verification (15 pts)
5. Incident Reporting (15 pts)
6. False Positive Control (15 pts)
7. Operational Judgment (Passing threshold: 80 / 100)
Verifiable Cryptographic Certificates:
- Web Crypto SHA-256 scenario fingerprinting.
- Portable, structured *.cybercert JSON credential export.
- Standalone offline certificate validator (verify.html).
100% Offline-First & Zero Dependencies: Runs directly from any static web server, GitHub Pages, or the bundled launcher.py with zero npm/node/external CDN requirements.

Quick Start

Option 1: Standalone Local Launcher (Python 3)

Run the lightweight local launcher to start the server at http://127.0.0.1:8080:

python launcher.py

Your default web browser will open automatically.

Option 2: Static Web Server

Serve the src/ directory with any static HTTP server:

cd src
python -m http.server 8000

Open http://127.0.0.1:8000 in your browser.

Option 3: Direct Static Hosting

Host the repository on GitHub Pages or any static file host pointing to src/index.html.

Certificate Verification

To verify a *.cybercert certificate issued by CyberSim OS:

Open src/verify.html in your web browser.
Drag and drop the *.cybercert file into the verification area.
The offline verifier recalculates the SHA-256 integrity hash, verifies the scenario fingerprint, and confirms the passing score and learner identity.

Architecture & Directory Structure

CyberSim-OS/
├── .labyricorn/                 # Labyricorn exhibition & devlog publishing records
├── src/
│   ├── index.html               # Main desktop simulation interface
│   ├── verify.html              # Standalone offline certificate verifier
│   ├── css/
│   │   ├── theme-windows.css    # Fictional Windows-like enterprise theme tokens
│   │   ├── desktop.css          # Window manager, taskbar, start menu, tray, toasts
│   │   ├── components.css       # Modals, form inputs, buttons, badges, tabs
│   │   └── apps.css             # Inlook, Navigator, Files, DocViewer, SecurityCenter
│   ├── js/
│   │   ├── main.js              # Application bootstrapper & scenario loader
│   │   ├── core/
│   │   │   ├── window_manager.js# Window lifecycle, stacking, drag, min/max/close
│   │   │   ├── desktop.js       # Desktop shell, launcher, clock, simulation controls
│   │   │   └── notifications.js # Toast notifications & Web Audio synth audio chime
│   │   ├── apps/
│   │   │   ├── inlook.js        # Email client with RFC header/link inspection
│   │   │   ├── navigator.js     # Simulated browser with intranet & phishing pages
│   │   │   ├── files.js         # Virtual filesystem explorer
│   │   │   ├── docviewer.js     # Spreadsheet and document viewer
│   │   │   └── security_center.js # Endpoint status & incident report dashboard
│   │   ├── engine/
│   │   │   ├── event_bus.js     # Behavioral telemetry logger
│   │   │   └── consequence.js   # Delayed consequence scheduler
│   │   ├── scenario/
│   │   │   ├── scenario_ref1.js # Reference scenario ("NexaCore Shift 1")
│   │   │   └── fingerprint.js   # Web Crypto SHA-256 scenario fingerprinting
│   │   ├── scoring/
│   │   │   ├── scorer.js        # Multi-axis behavioral scoring engine
│   │   │   └── aar.js           # After-Action Report modal with pedagogical feedback
│   │   └── cert/
│   │       ├── cert_generator.js# *.cybercert JSON generator & printable certificate
│   │       └── cert_verifier.js # Offline cryptographic certificate verifier
│   └── assets/                  # Embedded SVG icons and media
├── launcher.py                  # Zero-dependency local 127.0.0.1 web server
├── devlog_editor.py             # Labyricorn devlog validation & editing tool
└── README.md                    # Project documentation

Validation & Devlog Maintenance

Run the validation suite to ensure .labyricorn/ records and devlog entries adhere to the schema:

python devlog_editor.py --validate

License

MIT License. See LICENSE for details.