--- title: Is your domain using post-quantum encryption? Now you... description: Cloudflare has added post-quantum (PQ) TLS visibility to HTTP Traffic Analytics, Logpush, and Log Explorer, letting customers see the key exchange algorithm... canonical: https://daily.dev/posts/is-your-domain-using-post-quantum-encryption-now-you-can-see-for-yourself-utdvgngep twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Is your domain using post-quantum encryption? Now you can see for yourself | daily.dev og:description: Cloudflare has added post-quantum (PQ) TLS visibility to HTTP Traffic Analytics, Logpush, and Log Explorer, letting customers see the key exchange algorithm... og:url: https://daily.dev/posts/is-your-domain-using-post-quantum-encryption-now-you-can-see-for-yourself-utdvgngep og:image: https://api.daily.dev/og/posts/UtDVGNGeP.png og:image:alt: Is your domain using post-quantum encryption? Now you can see for yourself og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Is your domain using post-quantum encryption? Now you can see for yourself **[Cloudflare](https://daily.dev/sources/cloudflare)** · 9 min read · 0 upvotes · 0 comments ## Summary Cloudflare has added post-quantum (PQ) TLS visibility to HTTP Traffic Analytics, Logpush, and Log Explorer, letting customers see the key exchange algorithm negotiated per connection for individual domains rather than only aggregate Internet-wide statistics. The new TLS Key Exchange Groups card shows the breakdown between post-quantum X25519MLKEM768, classical ECDHE algorithms, deprecated X25519Kyber768Draft00, and non-PQ/no-TLS traffic. A new ClientTLSKeyExchangeGroup log field (and OriginTLSKeyExchangeGroup for Cloudflare-to-origin connections) exposes this data at the individual request level. Cloudflare is targeting full post-quantum security by 2029 and recommends enabling TLS 1.3, using Cloudflare Tunnel for legacy origins, and monitoring these new metrics to guard against harvest-now-decrypt-later attacks. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### How can I check whether traffic to my domain is using post-quantum encryption on Cloudflare? Cloudflare now exposes a TLS Key Exchange Groups card in the HTTP Traffic Analytics dashboard under the domain's Analytics tab, showing the percentage of visitor connections using post-quantum X25519MLKEM768 versus classical algorithms like X25519, P-256, or none. You can also filter HTTP Traffic by key exchange group, or enable the ClientTLSKeyExchangeGroup field in Logpush and Log Explorer for per-request visibility. _Developers auditing TLS posture for compliance can track cryptography rollouts like this one on daily.dev._ ### What is the recommended TLS 1.3 key exchange algorithm for post-quantum encryption? X25519MLKEM768 is the only recommended post-quantum key exchange algorithm in TLS 1.3, and it is now preferred by most major browsers. It combines classical ECDHE over curve X25519 with the post-quantum ML-KEM mechanism (based on NIST's FIPS 203 standard) in a hybrid approach, so the connection stays secure even if only one of the two algorithms holds up. Post-quantum encryption is not available in TLS 1.2 or earlier. _Teams deciding how to harden TLS configs can follow cryptography changes like this via daily.dev._ ### What percentage of Cloudflare origin connections currently use post-quantum encryption? About 15% of origins that Cloudflare connects to use hybrid ML-KEM post-quantum encryption, compared to roughly 70% of browser-generated visitor traffic hitting Cloudflare's network. Cloudflare recommends putting legacy origin servers that can't support post-quantum cryptography behind a Cloudflare Tunnel to protect that leg of the connection without upgrading the origin itself. _Engineers planning a post-quantum migration for their infrastructure can monitor rollout data like this on daily.dev._ ## Similar posts on daily.dev - [Automatic Key Exchange: faster, post-quantum secure origin handshakes for 45 billion daily connections \(and counting\)](https://daily.dev/posts/automatic-key-exchange-faster-post-quantum-secure-origin-handshakes-for-45-billion-daily-connectio-ybdrysxks) · Cloudflare · 1 upvotes · 0 comments - [Cloudflare Measures Origin TLS Preferences, Cutting Handshake Retries from 52% to 3.7%](https://daily.dev/posts/cloudflare-measures-origin-tls-preferences-cutting-handshake-retries-from-52-to-3-7--imenahndh) · InfoQ · 0 upvotes · 0 comments - [Post-quantum encryption for Cloudflare IPsec is generally available](https://daily.dev/posts/post-quantum-encryption-for-cloudflare-ipsec-is-generally-available-bafxrwzks) · Cloudflare · 0 upvotes · 0 comments --- Tags: [#quantum-computing](https://daily.dev/tags/quantum-computing), [#observability](https://daily.dev/tags/observability), [#cryptography](https://daily.dev/tags/cryptography), [#cloudflare](https://daily.dev/tags/cloudflare) [View this post on daily.dev](https://daily.dev/posts/is-your-domain-using-post-quantum-encryption-now-you-can-see-for-yourself-utdvgngep) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Is your domain using post-quantum encryption? Now you can see for yourself","url":"https://daily.dev/posts/is-your-domain-using-post-quantum-encryption-now-you-can-see-for-yourself-utdvgngep","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/is-your-domain-using-post-quantum-encryption-now-you-can-see-for-yourself-utdvgngep"},"datePublished":"2026-09-29T13:06:41.759Z","dateModified":"2026-09-29T13:09:23.719Z","description":"Cloudflare has added post-quantum (PQ) TLS visibility to HTTP Traffic Analytics, Logpush, and Log Explorer, letting customers see the key exchange algorithm...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/d08bd7109a1edbeff9ea8286428e911d?_a=AQAEuop","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/d08bd7109a1edbeff9ea8286428e911d?_a=AQAEuop","isAccessibleForFree":true,"articleSection":"Cloudflare","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"Cloudflare","logo":"https://media.daily.dev/image/upload/t_logo,f_auto/v1/logos/38522e1d11354cd6b7af66f9d4316735","url":"https://daily.dev/sources/cloudflare"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/is-your-domain-using-post-quantum-encryption-now-you-can-see-for-yourself-utdvgngep","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"quantum-computing,observability,cryptography,cloudflare","timeRequired":"PT9M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Cloudflare","item":"https://daily.dev/sources/cloudflare"},{"@type":"ListItem","position":3,"name":"Is your domain using post-quantum encryption? Now you can see for yourself"}]} {"@context":"https://schema.org","@type":"FAQPage","@id":"https://daily.dev/posts/is-your-domain-using-post-quantum-encryption-now-you-can-see-for-yourself-utdvgngep#faq","mainEntity":[{"@type":"Question","name":"How can I check whether traffic to my domain is using post-quantum encryption on Cloudflare?","acceptedAnswer":{"@type":"Answer","text":"Cloudflare now exposes a TLS Key Exchange Groups card in the HTTP Traffic Analytics dashboard under the domain's Analytics tab, showing the percentage of visitor connections using post-quantum X25519MLKEM768 versus classical algorithms like X25519, P-256, or none. You can also filter HTTP Traffic by key exchange group, or enable the ClientTLSKeyExchangeGroup field in Logpush and Log Explorer for per-request visibility. Developers auditing TLS posture for compliance can track cryptography rollouts like this one on daily.dev."}},{"@type":"Question","name":"What is the recommended TLS 1.3 key exchange algorithm for post-quantum encryption?","acceptedAnswer":{"@type":"Answer","text":"X25519MLKEM768 is the only recommended post-quantum key exchange algorithm in TLS 1.3, and it is now preferred by most major browsers. It combines classical ECDHE over curve X25519 with the post-quantum ML-KEM mechanism (based on NIST's FIPS 203 standard) in a hybrid approach, so the connection stays secure even if only one of the two algorithms holds up. Post-quantum encryption is not available in TLS 1.2 or earlier. Teams deciding how to harden TLS configs can follow cryptography changes like this via daily.dev."}},{"@type":"Question","name":"What percentage of Cloudflare origin connections currently use post-quantum encryption?","acceptedAnswer":{"@type":"Answer","text":"About 15% of origins that Cloudflare connects to use hybrid ML-KEM post-quantum encryption, compared to roughly 70% of browser-generated visitor traffic hitting Cloudflare's network. Cloudflare recommends putting legacy origin servers that can't support post-quantum cryptography behind a Cloudflare Tunnel to protect that leg of the connection without upgrading the origin itself. Engineers planning a post-quantum migration for their infrastructure can monitor rollout data like this on daily.dev."}}]} ```