The report from the European innovation hub for Internal Security is the first to clearly lay down the regulatory challenges of privacy coins and crypto mixers in the EU. Even though it is essentially important to uphold data encryption for securing individual information for privacy and safety in the community, legislated approval across Europe remains a challenge for cryptocurrency mixing protocols.

Source: Eurojust

Cryptographic Technologies Overview

The EU Innovation Hub, composed of members from EU agencies and member states, had already published its initial findings related to encryption, which outline the dual-use of cryptographic technologies for both good and bad use.

Strengths and Weaknesses in Crypto Ecosystem

It is a report for cryptography techniques to be used in securing public-private cryptocurrencies and NFTs for storage, mining, and transfer. It also points out the abuse of such systems by those who have resorted to the protocols and privacy coins for use to muddy the waters and get through a law enforcement investigation.

Discovering Suspect Cryptocurrencies and Exchanges

Part of the list of cryptocurrencies indicated includes Monero, Zcash, and Grin, while the noncompliant virtual-asset exchanges aid the criminal activities previously mentioned, as stated by the EU innovation hub. These are supposed to make tracing transactions challenging, with the help of mixers and privacy coins, respectively. Furthermore, advanced technologies such as Mimblewimble and zero-knowledge proofs make it even harder to trace cryptocurrency addresses, balances, and transactions.

Uncovering Hidden Clues: Policing Solutions

Even if ransom money could be siphoned through services like Tornado Cash, the transactions could be traced by law enforcement agencies despite the best efforts of crypto hackers and scammers. All advances in cryptographic technology are ultimately limited by their susceptibility to investigation by law enforcement, particularly after they have succeeded in seizing the private keys of suspects.


Recent legal cases with the founder of Tornado Cash, Alexey Pertsev, have brought to light the possible implications of developers who facilitate laundering operations. With Pertsev being one of the actors in a criminal case, through the bridge, a cross-chain protocol, siphoned $47.7 million using Tornado Cash. This sets a mark for further research to fight the issues and discourage unwanted activities in this sphere.

Concluding Remarks

The first report from the EU Innovation Hub gives insight into the changing landscape of cryptographic technologies and the regulatory challenges posed by privacy coins and crypto mixers. Of course, against the backdrop of encryption, it underlines that it is incumbent on us to tackle the misuse of this technology so that the integrity of financial systems in the EU could be guaranteed, improved, and consequently become an enhancer of regulatory compliance.