For Birthday Week, Cloudflare is helping one of the Internet’s core security protocols develop stronger protections against quantum downgrade attacks. To protect our customers and the Internet at large, we worked with the IETF to develop a mitigation against downgrade attacks on IPsec, which we’ve implemented and made available in beta across our IPsec products. The world is racing to build the first generation of quantum computers.
Preventing quantum downgrade attacks against IPsec
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