Quantum threat to Bitcoin is real, but manageable, according to Wall Street broker Bernstein

The broker said advances in quantum computing are accelerating the timeline for crypto risk, but argued Bitcoin faces a multi-year upgrade cycle, not an existential crisis. What to know : Bernstein warned quantum computing is a growing threat to Bitcoin’s cryptography, with timelines moving closer than previously expected. The risk is concentrated in older wallets, while core network functions like mining remain largely secure. Bitcoin and crypto have a three to five year window to transition to post-quantum security through protocol upgrades and wallet changes, the broker said.