1. Cold storage: Cold storage refers to an offline wallet that is completely detached from any online system. It is typically stored on a USB drive or another form of external storage device.
2. Multi-signature: Multi-signature wallets require more than one private key to sign a transaction and therefore can protect against theft or unauthorized access to funds.
3. Encryption: All cryptocurrency transactions use encryption to protect the data sent over the network. This ensures that the data is only visible to the sender and receiver, and prevents it from being accessed by malicious actors.
4. Two-factor authentication: Many wallets now offer two-factor authentication, which adds an extra layer of security by requiring a second form of verification in addition to the password.
5. Transaction confirmations: Most transactions require multiple confirmations from the network before they are processed. This helps to ensure that the transaction is legitimate and has not been tampered with.