All information about transactions in the blockchain network is available to any user. Imagine if everyone could look into any bank account in the world and see all bank transfers. How much does your neighbor earn? Or a work colleague. People prefer not to disclose personal data and especially how much money they keep in bank accounts. The business is not ready to share information on what amounts of transactions are concluded. Also, for personal or socio-political reasons, it may be essential to remain anonymous if you want to send a donation. For example, the co-founders of Ethereum Vitaly Buterin used Tornado Cash for donations for the needs of Ukraine. But in the blockchain network, all this is impossible, every payment can be tracked. Therefore, Tornado Cash was developed for ensures the privacy of transactions.