Bad actors with access to a cryptography-breaking quantum computer probably won’t try to announce it to the world by hacking Satoshi Nakamoto’s high-profile Bitcoin wallets, crypto executives say.
The first sign that quantum computing has broken modern cryptography probably won’t be a splashy theft of Satoshi Nakamoto’s dormant Bitcoin. It could just be a wave of unrelated crypto wallet breaches with no trace of how an attacker did it, according to the founder of blockchain startup Quantus.&
“When someone cracks your key, you don’t get a memo saying how they did it,” Christopher Smith, CEO and co-founder of Quantus Network, told Cointelegraph. A sufficiently powerful quantum computer could derive a private key from public keys exposed onchain, allowing an attacker to move funds without compromising a wallet, device or exchange’s internal systems.&
This makes the arrival of “Q-day” — a hypothetical future moment when quantum computers become powerful enough to break standard public-key cryptography — unusually difficult to detect. In a theft involving a highly secure organization, “the only forensic evidence would be that there was no breach,” Smith said.
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