Khai Som Security Arcade
Hone Your Cold Storage & Self-Custody Skills Before Real Stakes!
Mistakes in Bitcoin are permanent. Practice risk-free across 7 scenarios to make your real cold storage untouchable.
Category 1: Core Hardware Wallet Fundamentals
Master the essentials from unboxing tamper checks to daily transaction verification
Cold Storage Challenge
Safe or Scammed! Protect 1 BTC
Start with 1.00 BTC. Face 10 real-world dilemmas. One mistake drains your coins straight to scammers!
Cold Storage Simulator
Rookie Setup Mission
Mock hardware wallet device. Press physical L/R buttons, inspect tamper seals, write 12 words, and verify addresses.
Spot the Scam
Bitcoin Scam Hunter
Click to expose 4 red flags per case: phishing emails, compromised office desks, and malicious Google search ads.
Category 2: Speed & Cryptography (Reflex & BIP-39)
Sharpen your eyesight against clipboard hijackers and decode the BIP-39 dictionary
BIP-39 Word Hunter
4-Letter Secret & Checksum Magic
Discover why metal plates only require 4 characters per word across all 2,048 BIP-39 words, plus checksum mechanics.
Address Sniper
Intercept Clipboard Hijackers
Fast-paced reflex challenge: compare PC withdrawal addresses against hardware screens to abort malware swaps before time runs out.
Category 3: Advanced Sovereign Defense
Safeguard generational wealth with 2-of-3 multisig vaults and physical extortion defense
Multi-Key Fortress
2-of-3 Multisig Defense
Geodistribute 3 independent keys to survive fire, theft, and vendor shutdowns with zero single points of failure.
The $5 Wrench Attack
Surviving Extortion with a Decoy Wallet
Late night intruder scenario: leverage Duress PINs and funded decoy accounts (Plausible Deniability) to protect life savings.
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