$455 Billion in Bitcoin Exposed to Quantum Attack Risk via Address Reuse, Up 16% Since 2020

Despite billions spent on blockchain improvements and security measures, crypto criminals still steal billions of dollars from the crypto ecosystem each year, and that didn`t change in 2025. In fact, with approximatelly $4 billion in total losses from hacks, frauds, scams, money laundering, and ransomware, 2025 was the worst year for crypto illicit activity ever. com source: https://www.techgaged.com/455b-in-bitcoin-exposed-to-quantum-attack-risk-via-address-reuse-up-16-since-2020/