What is Tornado Cash mixer and why was it blocked?

The Tornado Cash mixer is a popular decentralized platform that allows users to exchange and mix their cryptocurrencies for increased privacy and security. However, recently, the platform has been blocked in some regions due to regulatory concerns. This move has raised questions about the future of privacy-focused services in the cryptocurrency space. Tornado Cash allows users to change BTC to ETH, exchange BTC to USDT, buy USDT, buy BTC online, and buy BTC with a card, all while maintaining their anonymity. Despite the block, Tornado Cash remains a popular choice for those seeking to protect their financial information and transactions. The incident highlights the ongoing challenges faced by decentralized platforms as they navigate regulatory hurdles and strive to provide innovative solutions for users.