“Not your keys, not your crypto.” This phrase captures the single most important principle of crypto security. If you don’t control your private keys, you don’t truly own your cryptocurrency.
Types of Crypto Wallets
Hot Wallets (Internet-Connected)
Exchange wallets: Your crypto sits on the exchange. Convenient for trading but you don’t control the keys. FTX’s collapse wiped out billions of user funds this way.
Software wallets: Apps where you control the keys. Free and convenient. Examples: MetaMask, Trust Wallet, Coinbase Wallet.
Cold Wallets (Offline)
Hardware wallets: Physical devices that store keys offline. Even if your computer is hacked, your crypto is safe. Best options:
- Ledger Nano X: ~$149 — supports 5,500+ coins
- Trezor Model T: ~$179 — open-source, touchscreen
- Ledger Nano S Plus: ~$79 — best value for Bitcoin
The Seed Phrase: Your Master Key
When setting up a wallet, you receive a 12 or 24-word recovery phrase. This is everything. Rules:
- Write it on paper — never type or photograph it
- Store in a fireproof safe or safety deposit box
- Make multiple copies in different locations
- Never share it with anyone — ever
Security Best Practices
- Use a hardware wallet for amounts over $1,000
- Enable 2FA on all exchange accounts (use an app, not SMS)
- Use unique, strong passwords for every platform
- Never connect your wallet to unverified websites
Final Thoughts
The right security level depends on how much you hold. A $100 hardware wallet is the best insurance you can buy for significant crypto holdings. If you lose your seed phrase and your device, your crypto is gone forever — there’s no customer support to call.
