Binance CSO Breaks Down Five Big Questions on Quantum Security
TL;DR
- Binance Chief Security Officer Jimmy Su says quantum computing is a long-term challenge rather than an immediate threat to crypto users.
- Google Quantum AI recently cut estimates for breaking blockchain cryptography by roughly 20 times, increasing the need for preparation.
- Su argues that the harder task is coordinating a gradual migration across blockchains, wallets, exchanges and custodians without creating new security risks.
Quantum security has moved higher on the cryptocurrency industry’s technical agenda after new research showed that future quantum computers could require significantly fewer resources to attack elliptic-curve cryptography. Google Quantum AI estimates that fewer than 500,000 physical qubits could eventually be sufficient for attacks against cryptography used by Bitcoin and Ethereum, although current machines remain far from that capability.
Five Questions Shaping Quantum Security
First, can quantum computers already steal crypto? The answer is no. Existing quantum hardware is nowhere near the scale required to break the elliptic-curve cryptography protecting major networks. Google’s March 2026 research nevertheless reduced previous resource estimates by about 20 times, suggesting that the industry should take migration planning seriously rather than assume the threat is decades away.
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