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Monero is rather one of the less private coin infrastructures. https://medium.com/@crypto_ryo/on-chain-tracking-of-monero-and-other-cryptonotes-e0afc6752527

Interesting, I will take a look to the monero competitors then.

Don't worry, that's FUD from a guy with an axe to grind (he didn't get funding for a project because he didn't want to make his code open source before getting paid). For example, he uses a ring size of 3 in his calculations, while a ring size of 11 has been mandatory since October 2018.