Police takes down Cryptomixer cryptocurrency mixing service

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HomeNewsSecurityPolice takes down Cryptomixer cryptocurrency mixing service

Police takes down Cryptomixer cryptocurrency mixing service

By Sergiu Gatlan

December 1, 2025
04:00 AM
0

Law enforcement officers from Switzerland and Germany have taken down the Cryptomixer cryptocurrency-mixing service, believed to have helped cybercriminals launder stolen funds.
The joint action was part of "Operation Olympia," and it took place between November 24 and November 28 in Zurich, Switzerland.
Authorities, supported by Europol and Eurojust, seized three servers and the clear web and Tor .onion domains, along with €24 million in Bitcoin.
"Cryptomixer was a hybrid mixing service accessible via both the clear web and the dark web. It facilitated the obfuscation of criminal funds for ransomware groups, underground economy forums and dark web markets," Europol said.
"Its software blocked the traceability of funds on the blockchain, making it the platform of choice for cybercriminals seeking to launder illegal proceeds from a variety of criminal activities, such as drug trafficking, weapons trafficking, ransomware attacks, and payment card fraud."

CryptoMixer[.]io website (BleepingComputer)
Europol supported a similar action in March 2023 targeting the ChipMixer cryptocurrency mixing service (one of the largest dark web crypto mixers at the time), when law enforcement in Germany (BKA) and the United States (FBI) seized four servers, 7 TB of data, and $46.5 million in Bitcoin.
Crypto mixers (or tumblers) add users' cryptocurrency to a single, large pool and distribute it across many new wallet addresses, making it much more difficult to trace the funds back to criminal activities and, in many cases, effectively hiding the source of illegally obtained cryptocurrency.
Crypto mixers also take a commission on all laundered crypto deposited before sending it to another wallet address owned by their "customers."
Just like run-of-the-mill money laundering operations, mixing services like Cryptomixer provide clients with anonymity and are often used by criminals before converting stolen assets into fiat currency or other cryptocurrencies using bank accounts and cash machines.

Cryptomixer[.]io seizure banner (BleepingComputer)
Although there may be legitimate use cases for such services, they are mainly used by cybercrime gangs to evade identification and prosecution.
Earlier this month, the founders of the Samourai Wallet (Samourai) crypto mixer were also sent to prison in the United States for helping criminals launder over $237 million, while a Chinese woman known as the "Bitcoin Queen" was sentenced in the UK to nearly 12 years for laundering Bitcoin from a £5.5 billion ($7.3 billion) cryptocurrency investment scheme.
In January, U.S. prosecutors also indicted three operators of the Blender.io and Sinbad.io crypto-mixing services, which ransomware gangs and North Korean hackers used to launder stolen cryptocurrency and ransom payments.

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Related Articles:
Crypto mixer founders sent to prison for laundering over $237 millionFBI takes down BreachForums portal used for Salesforce extortionFive plead guilty to helping North Koreans infiltrate US firms“Bitcoin Queen” gets 11 years in prison for $7.3 billion Bitcoin scamUK convicts "Bitcoin Queen" in world’s largest cryptocurrency seizure

CryptoCurrency
Cryptocurrency Mixer
CryptoMixer
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Sergiu Gatlan
Sergiu is a news reporter who has covered the latest cybersecurity and technology developments for over a decade. Email or Twitter DMs for tips.

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The European Union’s law enforcement agencies, specifically Europol and Eurojust, in collaboration with Swiss and German authorities, successfully dismantled the Cryptomixer cryptocurrency mixing service on November 28, 2025. This operation, dubbed “Operation Olympia,” targeted a hybrid mixing service accessible both via the clear web and the dark web, utilized by cybercriminals to obscure the origins of illicit funds. The takedown resulted in the seizure of three servers and the associated website domains (Cryptomixer[.]io), alongside €24 million in Bitcoin.

Cryptomixer functioned as a key component in laundering funds for a diverse range of criminal enterprises, including ransomware groups, underground economy forums, and dark web markets. Its software effectively blocked the traceability of funds within the blockchain, making it a preferred platform for cybercriminals seeking to conceal the provenance of illegally obtained cryptocurrency. Like traditional money laundering operations, Cryptomixer provided clients with anonymity, facilitating the conversion of stolen assets into fiat currency or other cryptocurrencies through bank accounts and ATMs.

This operation mirrored a 2023 takedown of the ChipMixer cryptocurrency mixing service, also orchestrated by Europol, Eurojust, and law enforcement agencies in Germany and the United States. The ChipMixer operation resulted in the seizure of four servers, 7 terabytes of data, and $46.5 million in Bitcoin. The success of these coordinated efforts underscores the growing international collaboration in combating cybercrime and the increasing sophistication of criminal organizations leveraging cryptocurrency-based services.

The value of services like Cryptomixer has come again under scrutiny, largely due to their frequently illicit uses. The case highlights the detrimental role such services can play in enabling a variety of criminal activities. The continued efforts of intelligence and law enforcement agencies in disrupting these operations represents a crucial component in addressing the evolving threats posed by cybercrime.

Several high-profile cases prior to this operation demonstrate the legal consequences associated with operating cryptocurrency mixing services. For instance, in early 2025, the founders of the Samourai Wallet, a cryptocurrency mixer, were imprisoned in the United States for their involvement in laundering over $237 million in illicit funds. Similarly, the "Bitcoin Queen," a Chinese national, received a near 12-year prison sentence in the United Kingdom for facilitating a £5.5 billion ($7.3 billion) cryptocurrency investment scheme. Recent indictments in January 2025 targeted the operators of Blender.io and Sinbad.io, services frequently utilized by ransomware gangs and North Korean hackers for laundering stolen cryptocurrency and ransom payments.

These legal actions emphasize the growing awareness and enforcement surrounding cryptocurrency mixing services and the severe repercussions for those involved in their operation. Law enforcement’s continued diligence in tracking and dismantling these services represents a vital countermeasure in mitigating the risks posed by cybercrime and safeguarding financial systems.