📅 July 16, 2025 | London, United Kingdom
Just when it seemed the industry was maturing and leaving its darkest days behind, a new piece of data set off alarm bells: crypto crimes via cross-chain protocols have already exceeded $21 billion so far in 2025, according to a devastating report by Elliptic, cited today by The Block. This means that in just two years, the volume of crimes linked to cross-chain bridges and digital asset mixers has tripled, exposing the dark side of the blockchain interoperability boom.
Elliptic, one of the world's most respected blockchain analytics firms, put cold figures to a reality that regulators have long feared: criminals are no longer limited to hacking an exchange or stealing a wallet; they are now exploiting the architecture of bridges and protocols that allow funds to be moved between different blockchains to erase traces, bypass sanctions, and complicate law enforcement.
The report reveals that the $21 billion detected this year includes fraud, hacks, ransomware, and money laundering, with a particularly alarming growth in decentralized mixers and bridges such as THORChain, RenBridge, and multichain routers that facilitate the conversion of funds from Bitcoin to Ethereum to stablecoins and back, blurring the trail.
A key fact: since 2023, the use of cross-chain bridges in illicit activities has increased from representing 15% of ill-gotten crypto funds to more than 45%, according to Elliptic. In other words, almost half of the dirty money circulating on blockchain crosses multiple networks to evade traceability.
Analysts warn that this trend is no coincidence: cross-chain protocols, which were created to facilitate interoperability and optimize liquidity between blockchains, have ended up becoming a double-edged sword. Their permissionless design and the lack of harmonized regulations across different jurisdictions make it nearly impossible to freeze funds or block malicious nodes in a timely manner.
Recent examples:
The Euler Finance hack, where attackers moved millions of USDC and ETH through three different bridges to cover their tracks.
Ransomware cells convert ransoms paid in BTC to stablecoins on other blockchains, using cross-chain mixers. Money laundering networks to evade OFAC sanctions through repackaged stablecoins.
Governments know this, but acting is complicated. The European Union, the US, and Asia are preparing stricter regulations to require audits, licenses, and suspicious activity reports from cross-chain bridge operators, but the race is slow compared to the speed of technological development.
Topic Opinion:
Every advance in blockchain brings with it an even greater security challenge. Interoperability is a key element for Web 3 to be truly global, but without controls, bridges become highways for criminals.
This isn't about demonizing technology, but rather understanding that innovation without auditing is fertile ground for abuse. The industry must move quickly: audit contracts, require KYC for nodes, strengthen transparency, and close legal loopholes that currently allow $21 billion to be lost in the dark.
Will it be easy? No. But if we want a robust and serious industry, we need to turn off the sting of criminals. Without that, the narrative of blockchain as a tool for freedom and transparency is tainted.
💬Do you think cross-chain bridges need strict regulation or are they better kept free?
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