http://whirtorrgetftvz4g466sjqkegtyi35bjl4bvotfkfossunf5my4x6ad.onion/blog/monero
In a paper on Empirical analysis of traceability in the Monero blockchain , a team of researchers from Princeton, Carnegie Mellon, Boston University, MIT, and the University of Illinois pointed to several flaws that make it possible to obtain individual transactions. While one of the issues was fixed in 2017, another still lingers. The flaw relates to how Monero hides the source of payment by combining the coin someone spends with other coins used as decoys.