Scientific American (Aug. 16) -- Even if the WannaCry hackers can exchange their ransom in bitcoins, which they have converted to monero, the criminals will have a hard time accessing their digital money anonymously. Cybersecurity experts will likely discover more ways to de-anonymize downstream monero transactions. Andrew Miller, a professor of computer science at Illinois, points to a flaw in earlier versions of monero in which addresses with balances of zero would be included in transaction mixes, effectively reducing the number of participants.