Glossary · C
Cold Wallet
A cryptocurrency wallet that stores private keys offline, disconnected from the internet. Hardware wallets (Ledger, Trezor) are the most common form. Cold wallets are significantly more secure against remote hacking than software (hot) wallets.
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How Cold Wallet works in practice
A cold wallet keeps keys on a device that never touches the internet, usually dedicated hardware. Transactions are signed on the device, so the key is never exposed to the connected machine.
Worked example
A hardware wallet displays transaction details on its own screen for physical confirmation. Malware on the computer cannot alter what the device shows or sign without the button press.
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The mistake that costs people money
Cold storage does not protect against approving a malicious transaction — it only protects the key. Read what the device screen actually says, and buy hardware directly from the manufacturer.
Cold Wallet: common questions
- What is Cold Wallet?
- A cryptocurrency wallet that stores private keys offline, disconnected from the internet. Hardware wallets (Ledger, Trezor) are the most common form. Cold wallets are significantly more secure against remote hacking than software (hot) wallets.
- How does Cold Wallet work in practice?
- A cold wallet keeps keys on a device that never touches the internet, usually dedicated hardware. Transactions are signed on the device, so the key is never exposed to the connected machine.
- Can you give an example of Cold Wallet?
- A hardware wallet displays transaction details on its own screen for physical confirmation. Malware on the computer cannot alter what the device shows or sign without the button press.
- What do people get wrong about Cold Wallet?
- Cold storage does not protect against approving a malicious transaction — it only protects the key. Read what the device screen actually says, and buy hardware directly from the manufacturer.