Bitcoin’s transaction signatures (ECDSA) are the main long-term quantum talking point: a sufficiently large fault-tolerant machine running Shor’s algorithm could, in theory, derive private keys from exposed public keys. Hashing for proof-of-work is a different, milder story under Grover’s algorithm. Serious estimates still put a practical break years to decades away, which is why the industry discusses post-quantum migrations instead of declaring the chain dead.
That nuance vanishes in fraud land. You get “IBM cracked BTC — move coins here”. Moving coins to a stranger is the attack. Keep keys offline from chat apps; follow widely reviewed wallet software; ignore apocalypse CTAs.
If something similar lands in your inbox, start at Get help. If the next pitch is “we can get the money back”, read Fake recovery first.
This article is for general information only. It is not legal or financial advice. Details change. If you have lost money, contact your bank or card issuer and use the routes on the help pages.