Very soon, public key encryption methods will become obsolete. It won’t be long before quantum computers mature enough to easily crack the cipher keys used. Computers send encrypted messages for everything including internet banking, web browsing, shopping and email. Just think of all those credit card numbers, state secrets, medical records, you name it, travelling around the internet. This information is generally secure now because classical computers can’t easily solve the mathematical problems required to crack the encryption but a quantum computer of sufficient size
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