Generally speaking, a coin mixer, sometimes referred to as a tumbler, is a blockchain-based protocol that can be used to obscure the ownership of cryptocurrencies by mixing them with coins from other users before redistributing them – so no one can tell who got what. Typically, the transparency of blockchains makes it a straightforward exercise to track the crypto’s provenance and transfers.
Source: https://www.coindesk.com/business/2024/01/08/north-korean-hacking-group-lazarus-withdraws-12m-of-bitcoin-from-coin-mixer/?utm_medium=referral&utm_source=rss&utm_campaign=headlines