ArXiv paper measuring PQ TLS on 4,665 UK orgs: HTTPS has it, SMTP mostly doesn't, and the certs are still pre-quantum.
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01 02 HTTPS has PQ key exchange in the wild, SMTP mostly doesn't, and no PQ cert signatures showed up across 4,665 UK orgs.03 Tens of thousands of CDN subdomains may amplify HTTP/3 into DoS, if the edge speaks H3 and the origin still lives in 2009.