You pay attention. DASH, Monero and Zcash have been listed in the top 3 crimes altcoin commonly used.
According to Jarek Jacubchek, a security expert at Europol, while Monero uses non-transparent bockchain technology, DASH arranges transactions in a way that no third party monitors the cash flow. . Zcash has special security that prevents access to and control over illegal sources.
Maybe this price of 3 coin will down people to monitor the situation offline.
Perhaps the attackers use these coins, but do not they use dollars? Not so long ago, even Bill Gates said that the crypto-currencies contribute to terrorism and money laundering, his words disappointed me ..