Could Quantum Computing Become Crypto’s Biggest Security Challenge?

Quantum computing is becoming a growing concern for blockchain security because sufficiently powerful quantum machines could eventually undermine some of the cryptography used by networks such as Bitcoin and Ethereum. European financial supervisors recently warned that the threat could emerge before quantum computing becomes commercially viable. Researchers have also reduced estimates of the resources required for parts of a future quantum attack, although no existing computer can break Bitcoin or Ethereum today. The challenge is that migrating major blockchains to quantum-resistant cryptography would require years of development and broad network agreement. Should crypto developers start treating quantum resistance as a priority now?