SSL Report:
github.com
(140.82.114.4)
Assessed on: Sun, 29 Mar 2026 23:19:51 UTC
| HIDDEN
| Clear cache
Summary
0
20
40
60
80
100
Certificate
Protocol Support
Key Exchange
Cipher Strength
Visit our documentation page
for more information, configuration guides, and books. Known issues are documented
here.
This server supports TLS 1.3. MORE INFO »
HTTP Strict Transport Security (HSTS) with long duration deployed on this server.
MORE INFO »
DNS Certification Authority Authorization (CAA) Policy found for this domain.
MORE INFO »
Certificate #1: RSA 4096 bits (SHA256withRSA)
Certification Paths |
Certificate #2: EC 256 bits (SHA256withECDSA)
|
Certification Paths |
Configuration
| Protocols | |
| TLS 1.3 | Yes |
| TLS 1.2 | Yes |
| TLS 1.1 | No |
| TLS 1.0 | No |
| SSL 3 | No |
| SSL 2 | No |
| Cipher Suites | ||
|
# TLS 1.3 (suites in server-preferred order)
|
||
TLS_AES_128_GCM_SHA256 (0x1301)
ECDH x25519 (eq. 3072 bits RSA) FS
|
128 | |
TLS_CHACHA20_POLY1305_SHA256 (0x1303)
ECDH x25519 (eq. 3072 bits RSA) FS
|
256P | |
TLS_AES_256_GCM_SHA384 (0x1302)
ECDH x25519 (eq. 3072 bits RSA) FS
|
256 | |
|
# TLS 1.2 (suites in server-preferred order)
|
||
TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 (0xc02b)
ECDH x25519 (eq. 3072 bits RSA) FS
|
128 | |
TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256 (0xcca9)
ECDH x25519 (eq. 3072 bits RSA) FS
|
256P | |
TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384 (0xc02c)
ECDH x25519 (eq. 3072 bits RSA) FS
|
256 | |
TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256 (0xc023)
ECDH x25519 (eq. 3072 bits RSA) FS
WEAK
|
128 | |
TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384 (0xc024)
ECDH x25519 (eq. 3072 bits RSA) FS
WEAK
|
256 | |
TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA (0xc00a)
ECDH x25519 (eq. 3072 bits RSA) FS
WEAK
|
256 | |
TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 (0xc02f)
ECDH x25519 (eq. 3072 bits RSA) FS
|
128 | |
TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256 (0xcca8)
ECDH x25519 (eq. 3072 bits RSA) FS
|
256P | |
TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (0xc030)
ECDH x25519 (eq. 3072 bits RSA) FS
|
256 | |
TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256 (0xc027)
ECDH x25519 (eq. 3072 bits RSA) FS
WEAK
|
128 | |
TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384 (0xc028)
ECDH x25519 (eq. 3072 bits RSA) FS
WEAK
|
256 | |
TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA (0xc014)
ECDH x25519 (eq. 3072 bits RSA) FS
WEAK
|
256 | |
TLS_RSA_WITH_AES_128_GCM_SHA256 (0x9c)
WEAK
|
128 | |
TLS_RSA_WITH_AES_256_GCM_SHA384 (0x9d)
WEAK
|
256 | |
TLS_RSA_WITH_AES_128_CBC_SHA256 (0x3c)
WEAK
|
128 | |
TLS_RSA_WITH_AES_256_CBC_SHA256 (0x3d)
WEAK
|
256 | |
TLS_RSA_WITH_AES_128_CBC_SHA (0x2f)
WEAK
|
128 | |
TLS_RSA_WITH_AES_256_CBC_SHA (0x35)
WEAK
|
256 | |
| (P) This server prefers ChaCha20 suites with clients that don't have AES-NI (e.g., Android devices) | ||
| Handshake Simulation | |||
| Android 4.4.2 | EC 256 (SHA256) | TLS 1.2 | TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 ECDH secp256r1 FS |
| Android 5.0.0 | EC 256 (SHA256) | TLS 1.2 | TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 ECDH secp256r1 FS |
| Android 6.0 | EC 256 (SHA256) | TLS 1.2 > http/1.1 | TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 ECDH secp256r1 FS |
| Android 7.0 | EC 256 (SHA256) | TLS 1.2 > h2 | TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256 ECDH x25519 FS |
| Android 8.0 | EC 256 (SHA256) | TLS 1.2 > h2 | TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256 ECDH x25519 FS |
| Android 8.1 | - | TLS 1.3 | TLS_CHACHA20_POLY1305_SHA256 ECDH x25519 FS |
| Android 9.0 | - | TLS 1.3 | TLS_CHACHA20_POLY1305_SHA256 ECDH x25519 FS |
| BingPreview Jan 2015 | EC 256 (SHA256) | TLS 1.2 | TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 ECDH secp256r1 FS |
| Chrome 49 / XP SP3 | RSA 4096 (SHA256) | TLS 1.2 > h2 | TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 ECDH secp256r1 FS |
| Chrome 69 / Win 7 R | EC 256 (SHA256) | TLS 1.2 > h2 | TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 ECDH x25519 FS |
| Chrome 70 / Win 10 | - | TLS 1.3 | TLS_AES_128_GCM_SHA256 ECDH x25519 FS |
| Chrome 80 / Win 10 R | - | TLS 1.3 | TLS_AES_128_GCM_SHA256 ECDH x25519 FS |
| Firefox 31.3.0 ESR / Win 7 | EC 256 (SHA256) | TLS 1.2 | TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 ECDH secp256r1 FS |
| Firefox 47 / Win 7 R | EC 256 (SHA256) | TLS 1.2 > h2 | TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 ECDH secp256r1 FS |
| Firefox 49 / XP SP3 | EC 256 (SHA256) | TLS 1.2 > h2 | TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 ECDH secp256r1 FS |
| Firefox 62 / Win 7 R | EC 256 (SHA256) | TLS 1.2 > h2 | TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 ECDH x25519 FS |
| Firefox 73 / Win 10 R | - | TLS 1.3 | TLS_AES_128_GCM_SHA256 ECDH x25519 FS |
| Googlebot Feb 2018 | EC 256 (SHA256) | TLS 1.2 | TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 ECDH x25519 FS |
| IE 11 / Win 7 R | EC 256 (SHA256) | TLS 1.2 | TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 ECDH secp256r1 FS |
| IE 11 / Win 8.1 R | EC 256 (SHA256) | TLS 1.2 > http/1.1 | TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 ECDH secp256r1 FS |
| IE 11 / Win Phone 8.1 R | EC 256 (SHA256) | TLS 1.2 > http/1.1 | TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 ECDH secp256r1 FS |
| IE 11 / Win Phone 8.1 Update R | EC 256 (SHA256) | TLS 1.2 > http/1.1 | TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 ECDH secp256r1 FS |
| IE 11 / Win 10 R | EC 256 (SHA256) | TLS 1.2 > h2 | TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 ECDH secp256r1 FS |
| Edge 15 / Win 10 R | EC 256 (SHA256) | TLS 1.2 > h2 | TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 ECDH x25519 FS |
| Edge 16 / Win 10 R | EC 256 (SHA256) | TLS 1.2 > h2 | TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 ECDH x25519 FS |
| Edge 18 / Win 10 R | EC 256 (SHA256) | TLS 1.2 > h2 | TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 ECDH x25519 FS |
| Edge 13 / Win Phone 10 R | EC 256 (SHA256) | TLS 1.2 > h2 | TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 ECDH secp256r1 FS |
| Java 8u161 | EC 256 (SHA256) | TLS 1.2 | TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 ECDH secp256r1 FS |
| Java 11.0.3 | - | TLS 1.3 | TLS_AES_128_GCM_SHA256 ECDH secp256r1 FS |
| Java 12.0.1 | - | TLS 1.3 | TLS_AES_128_GCM_SHA256 ECDH secp256r1 FS |
| OpenSSL 1.0.1l R | EC 256 (SHA256) | TLS 1.2 | TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 ECDH secp256r1 FS |
| OpenSSL 1.0.2s R | EC 256 (SHA256) | TLS 1.2 | TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 ECDH secp256r1 FS |
| OpenSSL 1.1.0k R | EC 256 (SHA256) | TLS 1.2 | TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 ECDH x25519 FS |
| OpenSSL 1.1.1c R | - | TLS 1.3 | TLS_AES_128_GCM_SHA256 ECDH x25519 FS |
| Safari 6 / iOS 6.0.1 | EC 256 (SHA256) | TLS 1.2 | TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256 ECDH secp256r1 FS |
| Safari 7 / iOS 7.1 R | EC 256 (SHA256) | TLS 1.2 | TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256 ECDH secp256r1 FS |
| Safari 7 / OS X 10.9 R | EC 256 (SHA256) | TLS 1.2 | TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256 ECDH secp256r1 FS |
| Safari 8 / iOS 8.4 R | EC 256 (SHA256) | TLS 1.2 | TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256 ECDH secp256r1 FS |
| Safari 8 / OS X 10.10 R | EC 256 (SHA256) | TLS 1.2 | TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256 ECDH secp256r1 FS |
| Safari 9 / iOS 9 R | EC 256 (SHA256) | TLS 1.2 > h2 | TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 ECDH secp256r1 FS |
| Safari 9 / OS X 10.11 R | EC 256 (SHA256) | TLS 1.2 > h2 | TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 ECDH secp256r1 FS |
| Safari 10 / iOS 10 R | EC 256 (SHA256) | TLS 1.2 > h2 | TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 ECDH secp256r1 FS |
| Safari 10 / OS X 10.12 R | EC 256 (SHA256) | TLS 1.2 > h2 | TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 ECDH secp256r1 FS |
| Safari 12.1.2 / MacOS 10.14.6 Beta R | - | TLS 1.3 | TLS_CHACHA20_POLY1305_SHA256 ECDH x25519 FS |
| Safari 12.1.1 / iOS 12.3.1 R | - | TLS 1.3 | TLS_CHACHA20_POLY1305_SHA256 ECDH x25519 FS |
| Apple ATS 9 / iOS 9 R | EC 256 (SHA256) | TLS 1.2 > h2 | TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 ECDH secp256r1 FS |
| Yahoo Slurp Jan 2015 | EC 256 (SHA256) | TLS 1.2 | TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 ECDH secp256r1 FS |
| YandexBot Jan 2015 | EC 256 (SHA256) | TLS 1.2 | TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 ECDH secp256r1 FS |
|
# Not simulated clients (Protocol mismatch)
|
|||
| Android 2.3.7 No SNI 2 |
Protocol mismatch (not simulated) |
||
| Android 4.0.4 |
Protocol mismatch (not simulated) |
||
| Android 4.1.1 |
Protocol mismatch (not simulated) |
||
| Android 4.2.2 |
Protocol mismatch (not simulated) |
||
| Android 4.3 |
Protocol mismatch (not simulated) |
||
| Baidu Jan 2015 |
Protocol mismatch (not simulated) |
||
| IE 6 / XP No FS 1 No SNI 2 |
Protocol mismatch (not simulated) |
||
| IE 7 / Vista |
Protocol mismatch (not simulated) |
||
| IE 8 / XP No FS 1 No SNI 2 |
Protocol mismatch (not simulated) |
||
| IE 8-10 / Win 7 R |
Protocol mismatch (not simulated) |
||
| IE 10 / Win Phone 8.0 |
Protocol mismatch (not simulated) |
||
| Java 6u45 No SNI 2 |
Protocol mismatch (not simulated) |
||
| Java 7u25 |
Protocol mismatch (not simulated) |
||
| OpenSSL 0.9.8y |
Protocol mismatch (not simulated) |
||
| Safari 5.1.9 / OS X 10.6.8 |
Protocol mismatch (not simulated) |
||
| Safari 6.0.4 / OS X 10.8.4 R |
Protocol mismatch (not simulated) |
||
| (1) Clients that do not support Forward Secrecy (FS) are excluded when determining support for it. | |||
| (2) No support for virtual SSL hosting (SNI). Connects to the default site if the server uses SNI. | |||
| (3) Only first connection attempt simulated. Browsers sometimes retry with a lower protocol version. | |||
| (R) Denotes a reference browser or client, with which we expect better effective security. | |||
| (All) We use defaults, but some platforms do not use their best protocols and features (e.g., Java 6 & 7, older IE). | |||
| (All) Certificate trust is not checked in handshake simulation, we only perform TLS handshake. | |||
| Protocol Details | |
| Secure Renegotiation | Supported |
| Secure Client-Initiated Renegotiation | No |
| Insecure Client-Initiated Renegotiation | No |
| BEAST attack | Mitigated server-side (more info) |
| POODLE (SSLv3) | No, SSL 3 not supported (more info) |
| POODLE (TLS) | No (more info) |
| Zombie POODLE | No (more info)
TLS 1.2 : 0xc023
|
| GOLDENDOODLE | No (more info)
TLS 1.2 : 0xc023
|
| OpenSSL 0-Length | No (more info)
TLS 1.2 : 0xc023
|
| Sleeping POODLE | No (more info)
TLS 1.2 : 0xc023
|
| Downgrade attack prevention | Yes, TLS_FALLBACK_SCSV supported (more info) |
| SSL/TLS compression | No |
| RC4 | No |
| Heartbeat (extension) | No |
| Heartbleed (vulnerability) | No (more info) |
| Ticketbleed (vulnerability) | No (more info) |
| OpenSSL CCS vuln. (CVE-2014-0224) | No (more info) |
| OpenSSL Padding Oracle vuln. (CVE-2016-2107) |
No (more info) |
| ROBOT (vulnerability) | No (more info) |
| Forward Secrecy | Yes (with most browsers) ROBUST (more info) |
| ALPN | Yes h2 http/1.1 |
| NPN | No |
| Session resumption (caching) | No (IDs empty) |
| Session resumption (tickets) | No |
| OCSP stapling | No |
| Strict Transport Security (HSTS) | Yes
max-age=31536000; includeSubdomains; preload |
| HSTS Preloading | Chrome Edge Firefox IE |
| Public Key Pinning (HPKP) | No (more info) |
| Public Key Pinning Report-Only | No |
| Public Key Pinning (Static) | No (more info) |
| Long handshake intolerance | No |
| TLS extension intolerance | No |
| TLS version intolerance | No |
| Incorrect SNI alerts | No |
| Uses common DH primes | No, DHE suites not supported |
| DH public server param (Ys) reuse | No, DHE suites not supported |
| ECDH public server param reuse | No |
| Supported Named Groups | x25519, secp256r1 (server preferred order) |
| SSL 2 handshake compatibility | No |
| 0-RTT enabled | No |
|
HTTP Requests
|
|
1 https://github.com/
(HTTP/1.1 200 OK)
| 1 | |
| Date | Sun, 29 Mar 2026 23:18:21 GMT | |
| Content-Type | text/html; charset=utf-8 | |
| Vary | X-PJAX, X-PJAX-Container, Turbo-Visit, Turbo-Frame, X-Requested-With, Accept-Language, Sec-Fetch-Site,Accept-Encoding, Accept, X-Requested-With | |
| content-language | en-US | |
| ETag | W/"629a47dcfa9b0f936410aa4be3db286d" | |
| Cache-Control | max-age=0, private, must-revalidate | |
| Strict-Transport-Security | max-age=31536000; includeSubdomains; preload | |
| X-Frame-Options | deny | |
| X-Content-Type-Options | nosniff | |
| X-XSS-Protection | 0 | |
| Referrer-Policy | origin-when-cross-origin, strict-origin-when-cross-origin | |
| Content-Security-Policy | default-src 'none'; base-uri 'self'; child-src github.githubassets.com github.com/assets-cdn/worker/ github.com/assets/ gist.github.com/assets-cdn/worker/; connect-src 'self' uploads.github.com www.githubstatus.com collector.github.com raw.githubusercontent.com api.github.com github-cloud.s3.amazonaws.com github-production-repository-file-5c1aeb.s3.amazonaws.com github-production-upload-manifest-file-7fdce7.s3.amazonaws.com github-production-user-asset-6210df.s3.amazonaws.com *.rel.tunnels.api.visualstudio.com wss://*.rel.tunnels.api.visualstudio.com github.githubassets.com objects-origin.githubusercontent.com copilot-proxy.githubusercontent.com proxy.individual.githubcopilot.com proxy.business.githubcopilot.com proxy.enterprise.githubcopilot.com *.actions.githubusercontent.com wss://*.actions.githubusercontent.com productionresultssa0.blob.core.windows.net productionresultssa1.blob.core.windows.net productionresultssa2.blob.core.windows.net productionresultssa3.blob.core.windows.net productionresultssa4.blob.core.windows.net productionresultssa5.blob.core.windows.net productionresultssa6.blob.core.windows.net productionresultssa7.blob.core.windows.net productionresultssa8.blob.core.windows.net productionresultssa9.blob.core.windows.net productionresultssa10.blob.core.windows.net productionresultssa11.blob.core.windows.net productionresultssa12.blob.core.windows.net productionresultssa13.blob.core.windows.net productionresultssa14.blob.core.windows.net productionresultssa15.blob.core.windows.net productionresultssa16.blob.core.windows.net productionresultssa17.blob.core.windows.net productionresultssa18.blob.core.windows.net productionresultssa19.blob.core.windows.net github-production-repository-image-32fea6.s3.amazonaws.com github-production-release-asset-2e65be.s3.amazonaws.com insights.github.com wss://alive.github.com wss://alive-staging.github.com api.githubcopilot.com api.individual.githubcopilot.com api.business.githubcopilot.com api.enterprise.githubcopilot.com edge.fullstory.com rs.fullstory.com; font-src github.githubassets.com; form-action 'self' github.com gist.github.com copilot-workspace.githubnext.com objects-origin.githubusercontent.com; frame-ancestors 'none'; frame-src viewscreen.githubusercontent.com notebooks.githubusercontent.com www.youtube-nocookie.com; img-src 'self' data: blob: github.githubassets.com media.githubusercontent.com camo.githubusercontent.com identicons.github.com avatars.githubusercontent.com private-avatars.githubusercontent.com github-cloud.s3.amazonaws.com objects.githubusercontent.com release-assets.githubusercontent.com secured-user-images.githubusercontent.com user-images.githubusercontent.com private-user-images.githubusercontent.com opengraph.githubassets.com marketplace-screenshots.githubusercontent.com copilotprodattachments.blob.core.windows.net/github-production-copilot-attachments/ github-production-user-asset-6210df.s3.amazonaws.com customer-stories-feed.github.com spotlights-feed.github.com objects-origin.githubusercontent.com *.githubusercontent.com images.ctfassets.net/8aevphvgewt8/; manifest-src 'self'; media-src github.com user-images.githubusercontent.com secured-user-images.githubusercontent.com private-user-images.githubusercontent.com github-production-user-asset-6210df.s3.amazonaws.com gist.github.com github.githubassets.com assets.ctfassets.net/8aevphvgewt8/ videos.ctfassets.net/8aevphvgewt8/; script-src github.githubassets.com; style-src 'unsafe-inline' github.githubassets.com; upgrade-insecure-requests; worker-src github.githubassets.com github.com/assets-cdn/worker/ github.com/assets/ gist.github.com/assets-cdn/worker/ | |
| Server | github.com | |
| Accept-Ranges | bytes | |
| Set-Cookie | _gh_sess=L5qCNTa%2BBd1O%2BkjhcLoaGZyAgZ4o%2F0Ey9VpwDBBHh%2FOJ8I2cWKVbJotdcbNYS27oaxoWAq8%2BDt%2FGi0tsenUBm8Vp1fAcYII1npTDHKwwV3DSoBuXfa7jYv7%2B4jd3Z3REcFbIHdiOMJLNqoUFUC1EyjWmqd63qAJpY8MwFTbHISrP1OeA1tc%2Fp9%2BkIGDGQ%2BOD%2BfMvYcpTDIXMDsy0gwMymX6W8%2FiKgcAEwhEqAkbpSBPDmXyIddcR%2BOdG0yKZVRk5Xec%2BAUx2RELNFJ336%2FfCWg%3D%3D--swpWZxDqhbgSuwRC--3kxmRMWRaU1xp%2BzlA2tf0w%3D%3D; path=/; HttpOnly; secure; SameSite=Lax | |
| Set-Cookie | _octo=GH1.1.255038610.1774826302; expires=Mon, 29 Mar 2027 23:18:22 GMT; domain=.github.com; path=/; secure; SameSite=Lax | |
| Set-Cookie | logged_in=no; expires=Mon, 29 Mar 2027 23:18:22 GMT; domain=.github.com; path=/; HttpOnly; secure; SameSite=Lax | |
| X-GitHub-Request-Id | 8E22:37D70F:3166568:401C4D0:69C9B33E | |
| connection | close | |
| Transfer-Encoding | chunked | |
| Miscellaneous | |
| Test date | Sun, 29 Mar 2026 23:18:14 UTC |
| Test duration | 96.937 seconds |
| HTTP status code | 200 |
| HTTP server signature | github.com |
| Server hostname | lb-140-82-114-4-iad.github.com |
SSL Report v2.4.1