European authorities are stepping up their fight against cryptocurrency privacy tools while demanding more user data from major exchanges.
In a coordinated strike last week, Europol shut down one of the continent’s largest crypto mixing services. At the same time, Coinbase reported record-breaking law enforcement requests, with European countries leading the surge.
The developments signal Europe’s growing determination to eliminate anonymous crypto transactions and increase surveillance of digital assets.
Major Crypto Mixer Eliminated in Cross-Border Operation
From November 24-28, authorities from Germany and Switzerland dismantled Cryptomixer, a cryptocurrency mixing service that had operated since 2016. The operation, backed by Europol and conducted in Zurich, resulted in the seizure of €25 million in Bitcoin and over 12 terabytes of data.
Cryptomixer had processed more than €1.3 billion in Bitcoin transactions over its eight-year operation. The platform worked by pooling users’ cryptocurrency deposits for random periods before redistributing them to new addresses. This process made it extremely difficult to trace the original source of funds.
The service operated on both the regular internet and dark web, attracting users from ransomware groups, underground cybercrime forums, and dark web marketplaces. Authorities seized three servers and took control of the cryptomixer.io domain, replacing the website with a law enforcement seizure notice.
Source: @Europol
This takedown follows similar actions against crypto mixing services across Europe. In 2023, authorities dismantled ChipMixer, which was then considered the largest mixing service. Earlier this year, German authorities shut down 47 unlicensed exchanges accused of facilitating money laundering.
Coinbase Faces Record Government Data Requests
Just days after the Cryptomixer shutdown, Coinbase released its annual transparency report revealing a dramatic increase in law enforcement requests. The exchange received 12,716 government and law enforcement requests between October 2024 and September 2025, marking a 19% increase from the previous year.
Most significantly, 53% of these requests came from outside the United States – the highest percentage ever recorded. This represents a major shift from previous years when US agencies dominated such requests.
France led the international surge with a 111% increase in data requests compared to the previous year. The United Kingdom saw a 16% rise, while Spain recorded a 27% jump. Together, the US, Germany, UK, France, Spain, and Australia accounted for approximately 80% of all requests.
The requests primarily involved criminal investigations and included subpoenas, court orders, search warrants, and other formal legal processes. Over 95% of requests globally were connected to criminal enforcement matters, with only 5% related to civil or administrative issues.
Europe’s New Regulatory Framework Transforms Crypto Landscape
The enforcement actions come as Europe implements its comprehensive Markets in Crypto-Assets (MiCA) regulation, which became fully effective on December 30, 2024. This regulation creates uniform rules for crypto-asset service providers across all 27 EU member states.
One of MiCA’s most privacy-impacting features is the Transfer of Funds Regulation, also known as the “Travel Rule.” This requirement forces crypto-asset service providers to collect and share personal data of both senders and recipients for every transaction. The rule aims to make crypto transfers as traceable as traditional bank transfers.
Under MiCA, crypto exchanges must implement systems to verify customer identities and share this information with other licensed providers. Coinbase recently faced a €21.46 million fine from Ireland’s Central Bank for failing to properly monitor over 30 million transactions worth more than €176 billion.
Over 65% of EU-based crypto businesses achieved MiCA compliance by early 2025, while authorities issued over €540 million in penalties to non-compliant firms.
Privacy Tools Face Coordinated Global Pressure
The crackdown on crypto mixing services extends beyond Europe. US authorities have also targeted similar privacy tools, with developers facing prison sentences for creating software that enhances transaction privacy.
The coordinated enforcement reflects growing concerns among regulators that mixing services enable money laundering, ransomware payments, and other criminal activities. Critics argue that these tools also serve legitimate privacy needs and that targeting developers criminalizes the creation of privacy-enhancing technology.
The pressure on privacy tools has coincided with increased interest in privacy-focused cryptocurrencies. Following recent data breaches and enforcement actions, searches for privacy coins have risen, and some privacy-focused tokens have seen significant price increases.
Looking Ahead: The New Reality for Crypto Privacy
Europe’s enforcement actions and regulatory framework represent a fundamental shift in how authorities approach cryptocurrency privacy. The combination of comprehensive regulation, enhanced surveillance requirements, and aggressive enforcement creates new challenges for users seeking financial privacy.
The Travel Rule requirements mean that most crypto transactions within Europe will now include the same identification requirements as traditional banking. Meanwhile, the shutdown of major mixing services eliminates key tools that users previously relied on for enhanced privacy.
Privacy Under Siege: Europe has made clear that the era of anonymous cryptocurrency transactions is ending. Through coordinated enforcement and comprehensive regulation, authorities are systematically dismantling privacy tools while expanding surveillance of digital assets. This transformation will likely reshape how people use and think about cryptocurrency privacy worldwide.