Crypto Wallet Security Checklist: 7 Rules That Prevent 99% of Hacks

Most crypto thefts are not sophisticated exploits — they are user error. A phishing link, a cloud backup, or a single unlocked device. These seven rules prevent the vast majority of losses.

1. Use a hardware wallet for meaningful holdings

Your keys never touch the internet. Ledger, Trezor, and Keystone are the established options. Buy only from the manufacturer; third-party resellers have been caught tampering with devices.

2. Write the seed phrase offline, twice

Paper degrades. Consider stamped steel plates. Store the two copies in separate physical locations — not a safe deposit box at the same bank as your mortgage.

3. Never type your seed phrase into a computer

No legitimate wallet upgrade, support desk, or "validation" page ever asks for your seed phrase. If a screen asks for it, assume it is malware.

4. Review every transaction before signing

Modern wallets show the exact contract, function, and recipient. If the data is unreadable hex, do not sign. Use a burner wallet for new dApps.

5. Revoke stale token approvals monthly

Every time you approve a DEX or NFT marketplace to spend your tokens, you create a liability. Use Revoke.cash or the wallet's built-in revoker to clean house.

6. Separate wallets by risk level

One hardware wallet for long-term savings. One hot wallet for daily DeFi. One burner wallet for airdrops and experiments. If the burner is drained, the damage is contained.

7. Document an inheritance path

If something happens to you, your family should be able to access the funds without guessing passwords or hiring a forensic engineer. A sealed letter with instructions, held by a trusted party, is enough for most.

Security is not a product you buy once. It is a habit you maintain. Review this checklist quarterly.