http://f45vtojgpisck2joju3ewn7nlp2r33dbvqflze74mfvryrrg44knnkqd.onion/the-history-of-privacy-coins-their-rise-their-adoptions-their-exploits-and-their-downfalls-11.html
The ring signature’s cryptography ensures that no one knows the source of the funds, not even the sender. When funds are sent to a Monero public address, the funds are sent to a one-time destination address so the funds are not associated with the public address, which means there are no records of funds being sent to the public address.