What if quantum computers already broke Bitcoin?

A quantum computer powerful enough to break Bitcoin could steal coins while the network runs as usual.

If a quantum computer capable of breaking modern encryption were to come online today, Bitcoin would likely be under attack — and no one would know.

“Everything would look like legitimate access,” David Carvalho, CEO of post-quantum infrastructure company Naoris Protocol, told Cointelegraph. “When you think you’re seeing a quantum computer out there, it’s already been in control for months.”

“You wouldn’t even know,” he said.

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