Ledger is the world leading hardware wallet manufacturer, producing physical devices (Nano S Plus, Nano X, Stax, Flex) that store private keys in a secure element chip – a tamper-resistant microcontroller that signs transactions without the private key ever leaving the device. Hardware wallets are the gold standard for securing significant cryptocurrency holdings. How Ledger works: the device generates private keys internally during setup; a 24-word seed phrase is displayed once and must be written down physically and stored safely; when signing a transaction, the computer sends the unsigned transaction to the Ledger; the device displays transaction details on its own screen (not the potentially compromised computer); the user physically confirms with a button press; the signed transaction returns to the computer – the private key never leaves the Ledger. Ledger Live (companion software) manages accounts, installs coin apps, and facilitates transactions. Ledger supports 5,500+ coins and tokens across 50+ blockchains. December 2023 incident: a supply chain attack compromised the Ledger Connect Kit library, enabling front-end attacks – underscoring that even hardware wallet users must scrutinise transaction details carefully. Hardware wallets integrate directly with MetaMask, Rabby, and other software wallets as a signing device.
Example: Example: A long-term Bitcoin holder transfers 5 BTC from Coinbase to a Ledger Nano X. They set up the device offline, write the 24-word seed phrase on the provided cards, and store them in a fireproof safe. Even if their house is burgled, the Bitcoin cannot be stolen without physical access to both the Ledger device and the PIN – or the seed phrase. This is true cold storage.
Learn more: Ledger Hardware Wallets
