Quantum Risk to Bitcoin Private Keys Uncovered by Fidelity

Fidelity Digital Assets has identified a potential risk to Bitcoin's private key security. According to the company, future quantum computers could potentially derive Bitcoin private keys from exposed public keys.

This could threaten the funds held in those accounts. Fidelity suggests that a proposed hash-based signature system could strengthen security, but this would come with trade-offs: larger signatures would reduce transaction throughput and complicate wallet recovery.