Europol has warned that quantum computers may eventually derive private keys from exposed public keys, posing a direct threat to cryptocurrency wallets with publicly visible key material. The law enforcement agency stated that no cryptographic fix exists for wallets whose keys are already exposed on-chain or elsewhere. The report emphasizes that fund holders must proactively migrate assets to new, quantum-resistant wallets before any such attack becomes feasible. This advisory highlights the urgency of addressing legacy wallet vulnerabilities as quantum computing capabilities continue to advance.