Quantum computing poses a threat to blockchain security due to its potential to break the cryptography powering blockchain.
Current blockchain systems rely on cryptography like ECC and RSA, which are at risk from quantum computing advancements such as Shor's Algorithm.
Developers are advised to stay updated on post-quantum cryptography standards, avoid address reuse, experiment with quantum-safe cryptography, and start quantum-proofing new projects.
Efforts are underway to implement quantum-safe cryptography in blockchain systems and wallets to prepare for the impact of quantum computing on security.