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How could quantum computers undermine digital security?

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Quantum computers could undermine widely used forms of encryption that protect online communications and digital identities. How could they do this, and when will they arrive?

Publication type:
policy brief
Publication Date:
2026-10
Language:
en
Publication URL:
https://doi.org/10.58248/RR112
Institute(s):
Parliamentary Office of Science and Technology of the UK Parliament (POST)
Country:
United Kingdom of Great Britain & Northern Ireland