Wealth Security Protocol
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Overview
💜Casa vs. Alternatives
Introduction
Option #1: Do-it-yourself
Option #2: Custodial Storage
Option #3: Commercial Systems
🔑System Design Principles
Introduction
Minimal Knowledge
High Security
Usability is Security
Expert Support
Redundancy
Sovereignty
Incentive Alignment
Bitcoin First
🚨Threat Overview
Introduction
Data and Credential Loss
Phishing
SIM Hijacking
Network Attacks
Malware
Supply Chain Attack
Physical Coercion
Child/Pet Attack
Internal Service Provider Attack
Platform / Hosting Provider Attack
Code Dependency Attack
Official Seizure
Inheritance Failure
🔐Chosen Features
Introduction
Hardware Wallet Signing
Multi-signature
Multi-location
Heterogeneous Hardware and Software
Seedless Hardware Wallets
Emergency Recovery Key
PIN or Biometrics for Mobile Key only
PIN for every device
Sovereign Recovery Instructions
Emergency Lockdown Button
Health Check
Identity Verification for Account Recovery
✅Chosen Key Schemes
3-of-5 Key Shield
2-of-3 Basic Multisig
Single-Key Wallet
❌Rejected Key Schemes
Key Sharding (Shamir’s Secret Sharing)
2-of-2
1-of-2
❌Rejected Features
Biometrics General Usage
Seed Phrase Backups
Financial Products and Services Integration
Brain Wallet -- Memory Based Solutions
Web-Based Key Management
Hardened Addresses
🔧Remaining Attack Vectors
Address Spoofing
Malicious Insider Key Theft
Extreme disaster scenarios
Extortion
👨‍🚀Future Improvements
Taproot/MAST
Schnorr Signatures
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Emergency Lockdown Button
To defend against attacks where the user is physically coerced, Casa App features an Emergency Lockdown Button. Once activated on the mobile app, all functions that depend on Casa App or Casa API will no longer function. This prevents the app from making new transactions or from using the Casa signing portal to add a signature to an existing transaction. The lockdown can only be removed by a customer service representative after the customer requests a removal of the lockdown and the representative verifies the customer’s identity.
It is important to note that the Emergency Lockdown can never be used to block a client from making transactions because our clients always control the majority of keys. When the Emergency Lockdown is activated, a client can still access their funds using Electrum or other software.
🔐Chosen Features - Previous
Sovereign Recovery Instructions
Next - 🔐Chosen Features
Health Check
Last modified 1yr ago
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