According to Wall Street broker Bernstein, the emergence of quantum computing poses a legitimate yet controllable threat to Bitcoin and the broader crypto ecosystem. Recent breakthroughs have accelerated the timeline for potential attacks on modern cryptography, making it a medium to long-term concern rather than a distant one.
Analysts at Bernstein believe that the risk associated with quantum computing should be viewed as a system upgrade cycle rather than an existential threat. Quantum computers, which utilize the principles of quantum mechanics, have the potential to weaken cryptographic systems like elliptic curve encryption by solving complex problems more efficiently than classical computers.
However, the report notes that the threat is not unique to Bitcoin and spans multiple industries, including finance and defense. Bernstein estimates that around 1.7 million BTC held in older wallets are vulnerable, but newer practices and protocols reduce this exposure. The broker expects the crypto industry to have sufficient time, approximately three to five years, to transition toward post-quantum cryptography, with upgrades such as new wallet standards and key rotation already being discussed.