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News


blog.cloudflare.com > automatic-key-exchange-for-origins

Automatic Key Exchange: faster, post-quantum secure origin handshakes for 45 billion daily connections (and counting)

6+ day, 42+ min ago   (1121+ words) For years, our guess was the same for every origin on the Internet: X25519. Widely supported, but as it turns out, suboptimal for roughly 30% of the origin connections we've since measured. Today we're announcing Automatic Key Exchange, an extension of Automatic…...


blog.cloudflare.com > revisiting-spectre-attacks-on-workers

A revisit of remote Spectre attacks on Cloudflare Workers

3+ week, 4+ day ago   (1039+ words) Today we are publishing a paper describing our findings, co-authored by Albert Pedersen, Haocheng Xiao, Sam Ainsworth, Nigel Topham, and Martin Schwarzl. This paper covers research done in 2024 and early 2025. Note that the presented attack is mitigated already in the…...