While the establishment would like the world to believe that only criminal masterminds and people with something to hide would prefer the decentralized freedom of Bitcoin (as opposed to the ‘under government watch’ banking system that floats Washington’s boat), the truth is that the biggest cryptocurrency is considerably less ‘anonymous’ than is commonly exclaimed.

In fact, as more and more criminals become aware of the real privacy concerns of Bitcoin, they are increasingly turning to other – more private – coins.

As Bloomberg reports, privacy coins such as monero, designed to avoid tracking, have climbed faster over the past two months as law enforcers adopt software tools to monitor people using bitcoin. A slew of analytic firms such as Chainalysis are getting better at flagging digital hoards linked to crime or money laundering, alerting exchanges and preventing conversion into traditional cash.

The European Union’s law-enforcement agency, Europol, raised alarms three months ago, writing in a report that “other cryptocurrencies such as monero, ethereum and Zcash are gaining popularity within the digital underground.” Online extortionists, who use ransomware to lock victims’ computers until they fork over a payment, have begun demanding those currencies instead. On Dec. 18 hackers attacked up to 190,000 WordPress sites per hour to get them to produce monero, according to security company Wordfence.

For ransomware attacks, monero is now “one of the favorites, if not the favorite,” Matt Suiche, founder of Dubai-based security firm Comae Technologies, said in a phone interview.

Monero quadrupled in value to $349 in the final two months of 2017, according to coinmarketcap.com, placing it among a number of upstart coins that rose faster than bitcoin, the world’s most valuable digital currency. Bitcoin roughly doubled in the same period, data compiled by Bloomberg show. Monero’s price has climbed another 7 percent so far this year, according to coinmarketcap.com.