Google’s latest research indicates that breaking Bitcoin’s and Ethereum’s cryptography could be significantly easier than previously thought, with practical quantum attacks potentially requiring fewer than 500,000 physical qubits. This revelation challenges earlier estimates, which suggested millions of qubits would be necessary, and raises concerns about the vulnerability of Bitcoin transactions, particularly those exposed during the in-flight period. The study highlights that an attacker could hijack a Bitcoin transaction within approximately nine minutes, affecting around 6.9 million bitcoins currently at risk.
The implications for the financial markets are considerable. With Bitcoin’s Taproot upgrade making public keys visible by default, the number of wallets susceptible to quantum threats has increased. This could lead to heightened volatility in Bitcoin prices as investors reassess the security of their holdings, especially given the potential for real-time attacks that could undermine confidence in the cryptocurrency’s integrity.
For market professionals, the key takeaway is the urgency for post-quantum migration strategies. While quantum attacks are not imminent, the timeline for their feasibility may be shorter than anticipated, prompting a reevaluation of risk management practices in cryptocurrency investments.
Source: coindesk.com