Monero (XMR) is a privacy-focused peer-to-peer digital currency designed to be undetectable and fully anonymous. The architecture of this system makes the transaction on the Monero blockchain not tied to a specific user or identity in the real world as the cryptocurrency is fungible. This term describes a digital currency in which every single unit is identical and interchangeable with every other unit of that currency. So, while the Bitcoin bought on the darknet can be distinguished from the Bitcoin bought on Binance by analyzing the blockchain transactions, two separate Monero coins look exactly the same and cannot be distinguished in any way.
This makes Monero the subject of numerous attacks from many governments and financial law enforcement officials. This is because they cannot track payments on the XMR network and collect and analyze data about its users.