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Quantum computers can break major encryption method, researchers claim [newscientist.com]:

A group of researchers has claimed that quantum computers [newscientist.com] can now crack the encryption we use to protect emails, bank accounts and other sensitive data. Although this has long been a theoretical possibility, existing quantum computers weren’t yet thought to be powerful enough to threaten encryption.

However, security experts have expressed doubt about the new claim, saying that although the code-breaking technique appears valid, there is no reason to expect it could crack encrypted data in a practical timescale or that current quantum hardware …

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