Bitcoin may be vulnerable to quantum attacks
According to a report by the analytical firm Ark Invest, about a third of Bitcoin (BTC) reserves may be susceptible to future quantum attacks. Experts warn that although the real threat is not yet near, Bitcoin developers should already be thinking about protecting the network from this potential danger.
Quantum computers that use quantum mechanics to process data can, in theory, crack current cryptographic algorithms, including Bitcoin's ECDSA algorithm. This could allow attackers to gain access to users' private keys and steal their cryptocurrency funds.
According to Ark Invest, 32% of all BTC, or about 6 million coins, are held in vulnerable addresses created before 2017. These addresses use the less secure ECDSA algorithm, which could be broken by future quantum computers. Bitcoin developers need to support a more resilient algorithm, such as BIP-360, which uses Lamport signature instead of ECDSA.
Although the risk of quantum attacks does not yet pose an immediate threat to Bitcoin, as robust quantum computers have not yet been created, experts advise the crypto community and regulators to start preparing for this future threat now. Timely protocol updates and user migration to more secure wallets could help secure the Bitcoin ecosystem.