Quantum Computer Threat Looms Over Bitcoin Security

A study by Google's Quantum AI team has highlighted a significant vulnerability in the security of Bitcoin and other cryptographic systems. The research, which was published on March 30th, found that a quantum computer could potentially crack Bitcoin's elliptic curve cryptography using fewer than 500,000 physical qubits.

This is a significant reduction from previous estimates, which suggested that over 10 million qubits would be required to breach the security of Bitcoin. The study also revealed that around 6.9 million BTC are at risk due to their public keys being already exposed.

The same quantum problem affects many other systems using elliptic curve cryptography, including banks, stock exchanges, and military communications. However, the main issue for Bitcoin is its inability to push software updates as quickly as centralized systems can. This makes it more vulnerable to potential attacks.