What is a hot wallet?

Detailed explanation

A typical hot wallet runs on a smartphone, computer or server regularly connected to the internet. It can receive payments, display balances, create transactions and sign directly. This makes it convenient and readily available for everyday use. At the same time, malware, compromised operating systems, fake apps or unprotected backups can more easily become risks than with a consistently separated offline signing system.

Hot does not automatically mean unsafe, nor cold automatically safe. A well-maintained smartphone wallet holding a small everyday amount can be a reasonable tool. Conversely, a poorly documented offline setup can fail through user errors or lost backups. Good practice includes keeping software updated, protecting the device, checking receiving and sending data, and holding only amounts whose loss would be tolerable in the intended use. Backups remain crucial for hot wallets too. The term mainly describes signing keys being available in an online environment, not the owner, brand or a fixed security ranking.