Tornado Cash co-founder Roman Storm has been convicted in the U.S. for helping develop and operate a crypto-mixing tool allegedly used by North Korean hackers. Prosecutors argued that the platform enabled laundering over $1 billion in illicit funds, including those linked to the Lazarus Group, a state-sponsored cybercrime unit. Storm was charged with conspiracy to commit money laundering, sanctions violations, and operating an unlicensed money-transmitting business. His defense claimed Tornado Cash was neutral software, not criminally intended. The conviction sets a precedent in holding developers accountable for blockchain tools misused by bad actors, raising concerns about privacy, open-source code, and regulation.