Glossary

Hot Wallet

Plain-language definition Crypto glossary

Key takeaways

A hot wallet is a crypto wallet whose private keys are stored on an internet-connected device, such as a phone, browser extension or exchange account, making funds quick to access.
Because the keys live on a connected device, a hot wallet can sign and broadcast transactions instantly, but that same connectivity exposes it to malware and phishing.
Hot wallets suit funds used regularly, while larger long-term holdings are usually safer in offline cold storage.

Definition

A hot wallet is a cryptocurrency wallet that stays connected to the internet, such as a mobile app, browser extension or exchange account. It makes sending and receiving funds fast and convenient, which is why it is commonly used for smaller amounts and frequent transactions.

Why it matters

Being connected to the internet is convenient but also means a hot wallet is exposed to a wider range of attacks than an offline wallet, including malware on the device it runs on and phishing attempts targeting the app or account. Most guidance treats hot wallets as suitable for spending money, not savings, with larger holdings better suited to cold storage.

Example

An exchange account used for active trading is effectively a hot wallet controlled by that exchange rather than by the individual user, which is a different custody arrangement than a self-custodied hot wallet app.

FAQ

Frequently asked questions

How is a hot wallet different from a cold wallet?

A hot wallet keeps its private keys on an internet-connected device, so transactions are fast and convenient but more exposed to online threats. A cold wallet keeps keys offline, which is more secure but less convenient for frequent use.

Is it safe to keep money in a hot wallet?

A hot wallet is reasonable for the smaller amounts you use day to day, much like cash in a pocket, but anything online is reachable by malware and phishing. A common practice is to split holdings, keeping a small amount in a hot wallet for spending and larger savings in cold storage.

What counts as a hot wallet?

Any wallet whose keys sit on a connected device qualifies, including mobile wallet apps, browser extension wallets, and funds held in an exchange account. If it can sign and broadcast a transaction instantly while online, it is a hot wallet.