Crypto expert Vitalik Buterin warns that quantum computers could disrupt blockchain security before 2030, posing a significant threat to the digital financial world. With quantum computers’ ability to process information in complex ways and potentially solve problems currently impossible for classical machines, Buterin estimates there’s a 20% chance they could break current cryptographic systems before the end of the decade. This would be devastating for blockchain networks like Ethereum and Bitcoin, which heavily rely on secure protocols like SHA-256 and elliptic curve cryptography to safeguard transactions and user data. While still in its early stages, Buterin’s prediction highlights the urgency for developers and investors to prepare for a post-quantum era where current cryptographic methods may be rendered obsolete. Current research focuses on developing new quantum-resistant cryptography solutions, but widespread adoption remains slow. This situation calls for immediate action from blockchain protocols, wallet providers, and crypto exchanges to adapt their defenses in anticipation of the quantum threat before its full realization.