Europol Dismantles Major Cryptocurrency Mixer in Operation “Olympia,” Seizing 12TB of Data and $29 Million

Europol has teamed up with German and Swiss law enforcement authorities and has successfully shutdown the renowned cryptocurrency mixer, Cryptomixer.io. According to a local report, this recent crackdown was the latest success of its recently-launched “Operation Olympia,” which took place from November 24 to November 28, 2025.

The coordinated effort targeted the crypto mixer’s infrastructure and resulted in the confiscation of three main servers directly connected to cryptomixer.io’s domain. Notably, the action also led to a huge seizure of more than $29 million worth of Bitcoin and a massive 12 terabytes of crucial transactional data.

Targeting the $1.5 Billion Laundering Pipeline

The key aim of the joint effort’s Operation Olympia was a service that took advantage of the decentralized and anonymous components of crypto assets. Notably, the service enabled customers to gather their crypto assets and then redistribute the assets to minimize traceability.

The crypto mixer’s operators claimed that their services were to enhance privacy for legitimate customers and use cases. However, law enforcement officers confirmed that the firm was overwhelmingly used by criminal parties aiming to conceal the origins of their fraudulent money.

Notably, the international agency’s investigation found that Cryptomixer.io operated a “hybrid crypto mixing service”. Europol noted that the mixer’s portal was also accessible to users in both the clear/mainstream web and the dark web, making it a key platform for high-end criminal operations.

According to Europol, since its inception in 2016, this cryptocurrency washing service has laundered more than $1.5 billion. This staggering amount comes from criminal enterprises that use ransomware and extortion to perpetrate their crimes through multi-billion dollar networks of global organized crime, such as drug trafficking, the dark web economy, and global arms trafficking.

These vast laundering networks are not isolated; they form interconnected systems where illicit funds from major dark web marketplaces, for instance, are often funneled through such mixers and exchanges to obscure their trail.

Notably, the agency added that this successful crackdown required meticulous organization and execution involving multiple essential European law enforcement agencies. Other parts of the group include Swiss law enforcement agencies, Eurojust, and the JCAT. In addition, the German Federal Criminal Police Office (or Bundeskriminalamt) assisted in the successful effort to shut down another high-profile cryptocurrency mixer.

The Data Haul: A Blueprint for Future Investigations

The confiscation of $29 million worth of Bitcoin has an immediate financial impact on the cryptomixer. However, the seizure of 12 TB of server details reveals a notable intelligence victory that has way more value than the financial seizure.

This data trove is anticipated to comprise user identifiers, transaction logs, records of communication, as well as other important forensic evidence that can be extensively analyzed to track down the sources of the seized funds. Also, more importantly,  investigators can trace the entities and individuals who patronized the crypto mizers.

Germany’s BKA also confirmed the importance of this seizure, noting that the results will add to the investigation of future cybercrimes. This operation exemplifies the intensifying, coordinated global campaign against all facets of crypto-enabled crime, from laundering services like mixers to the fraudulent investment platforms that generate illicit proceeds.