Many experts fear that quantum computers could one day break the ciphers and leave us open to attack. Many people think that quantum computers won't be ready until 2020. There is a lot of work going on to design new types of algorithms that are resistant to even the most powerful quantum computer. Tammy is an emerging journalist who wrote a story about how quantum- resistant algorithms are being developed. Tech Review Explains is where our writers untangle the complicated, messy world of technology to help you understand what comes next. You can check out our other explainers here.

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