Bitcoin Faces Renewed Scrutiny Over Quantum Computing Threat

For years, warnings that quantum computers could “break Bitcoin” appeared in headlines and on social media, but many dismissed them as alarmism. Practical quantum machines capable of such attacks simply didn’t exist and the risks seemed far off.

But recently, the tone has shifted. In mid-January, Christopher Wood, global head of equity strategy at multi-billion investment bank Jefferies reportedly removed a 10% Bitcoin allocation from his widely followed “Greed & Fear” model portfolio — its entire BTC allocation — citing concerns that long‑term advances in quantum computing could eventually undermine Bitcoin’s security.

Just days after that, U.S. crypto exchange Coinbase formed an advisory board including crypto and quantum experts to assess risks and outline migration paths to post-quantum-secure signatures. But how immediate and real is the quantum computing threat to Bitcoin?

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