Blockstream Green and Jade wallets that use 2FA Protected accounts (formerly Multisig Shield security policy) provide extra security for your assets. Multiple keys are required to send a transaction, making it harder for thieves and hackers to steal your funds. The first key is on your device protected by a PIN code and is backed up with a 12-word (or 24) recovery phrase. The second key is held on the Blockstream Green servers protected by two-factor authentication (2FA). Some examples of situations Blockstream Green’s multisig protects you from: Someone gains access to your wallet device: They cannot spend your funds without both your PIN and your 2FA method. Someone gains access to your wallet device and knows your PIN: They cannot spend your funds without your 2FA method. Someone gains access to your primary recovery phrase: They cannot spend your funds without your 2FA method. Someone gains access to your 2FA method: They cannot spend your funds without either your wallet device and PIN or your recovery phrase. If you decide to use a 2-of-3 multisig account, there are extra pieces of sensitive data to secure. For more details, see our article on how Blockstream Green multisig works. Best practices for setting up a secure wallet (including 2FA).
