Address Reuse
- Address reuse harms the privacy of not only yourself, but also others — including those not related to the transaction
“A new key pair should be used for each transaction to keep them from being linked to a common owner.”
— Bitcoin: A Peer-to-Peer Electronic Cash System
Examples
- Everyone is able to see all your transactions if you use just one address
- If an eCommerce shop reuses an address for all customers, we can see all customer transactions made to this shop