SSL Report: travail.gouv.fr (185.194.82.27)
Assessed on:  Tue, 22 Jul 2025 07:21:04 UTC | Clear cache

Due to a recently discovered bug in Apple's code, your browser is exposed to MITM attacks. Click here for more information.

Summary
Overall Rating
T
If trust issues are ignored: A-
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's certificate is not trusted, see below for details.
This server does not support 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 3072 bits (SHA256withRSA)
Server Key and Certificate #1
Subject sante.gouv.fr
Fingerprint SHA256: 00c0e051003794e6cefed359febeabb680aa5d4cfbecf9cfda07ab7bd85d5310
Pin SHA256: u9+7n+RjyEbVkNSyyO+mhipUoVTKUhsVIjGWvOAMZYw=
Common names sante.gouv.fr
Alternative names medicaments.gouv.fr www.medicaments.gouv.fr monbilanprevention.sante.gouv.fr www.monbilanprevention.sante.gouv.fr www.antibiotique.gouv.fr sante.gouv.fr antibiotique.gouv.fr www.social-sante.gouv.fr solidarites-sante.gouv.fr www.acces-origines-amp.sante.gouv.fr eaupotable.sante.gouv.fr www.eaupotable.sante.gouv.fr www.sante.gouv.fr social-sante.gouv.fr www.solidarites-sante.gouv.fr acces-origines-amp.sante.gouv.fr www.antibiotiques.gouv.fr antibiotiques.gouv.fr   MISMATCH
Serial Number 2fb3bc49d7677cf89f89df7541768d65
Valid from Mon, 21 Oct 2024 22:00:00 UTC
Valid until Tue, 21 Oct 2025 21:59:59 UTC (expires in 2 months and 29 days)
Key RSA 3072 bits (e 65537)
Weak key (Debian) No
Issuer Certigna Services CA
AIA: http://autorite.dhimyotis.com/servicesca.der
AIA: http://autorite.certigna.fr/servicesca.der
Signature algorithm SHA256withRSA
Extended Validation No
Certificate Transparency Yes (certificate)
OCSP Must Staple No
Revocation information CRL, OCSP
CRL: http://crl.dhimyotis.com/servicesca.crl
OCSP: http://servicesca.ocsp.certigna.fr
OCSP: http://servicesca.ocsp.dhimyotis.com
Revocation status Good (not revoked)
CRL ERROR: IOException occurred
DNS CAA Yes
policy host: travail.gouv.fr
issue: letsencrypt.org flags:0
issuewild: letsencrypt.org flags:0
issue: certigna.fr flags:0
Trusted No   NOT TRUSTED (Why?)
Mozilla  Apple  Android  Java  Windows 


Additional Certificates (if supplied)
Certificates provided 2 (4435 bytes)
Chain issues None
#2
Subject Certigna Services CA
Fingerprint SHA256: 71e653bfbf5e72515b4099bbd5ec8872812b47c6ec1fa9add327e1c92c9ea16d
Pin SHA256: Vvyvg4+bOEbI6aO7K28ioVsUfckLqCSKqlIqZTEB/uE=
Valid until Sat, 22 Nov 2025 11:33:52 UTC (expires in 3 months and 30 days)
Key RSA 4096 bits (e 65537)
Issuer Certigna
Signature algorithm SHA256withRSA


Certification Paths
Path #1: Not trusted (invalid certificate [Fingerprint SHA256: 00c0e051003794e6cefed359febeabb680aa5d4cfbecf9cfda07ab7bd85d5310])
1 Sent by server sante.gouv.fr
Fingerprint SHA256: 00c0e051003794e6cefed359febeabb680aa5d4cfbecf9cfda07ab7bd85d5310
Pin SHA256: u9+7n+RjyEbVkNSyyO+mhipUoVTKUhsVIjGWvOAMZYw=

RSA 3072 bits (e 65537) / SHA256withRSA
CRL ERROR: IOException occurred
2 Sent by server Certigna Services CA
Fingerprint SHA256: 71e653bfbf5e72515b4099bbd5ec8872812b47c6ec1fa9add327e1c92c9ea16d
Pin SHA256: Vvyvg4+bOEbI6aO7K28ioVsUfckLqCSKqlIqZTEB/uE=

RSA 4096 bits (e 65537) / SHA256withRSA
CRL ERROR: IOException occurred
3 In trust store Certigna   Self-signed
Fingerprint SHA256: e3b6a2db2ed7ce48842f7ac53241c7b71d54144bfb40c11f3f1d0b42f5eea12d
Pin SHA256: UQ0g5cR/Y89mayD2GvYrwJmkKsgk/6RDotp8kLGAipE=

RSA 2048 bits (e 65537) / SHA1withRSA
Weak or insecure signature, but no impact on root certificate
Path #1: Not trusted (invalid certificate [Fingerprint SHA256: 00c0e051003794e6cefed359febeabb680aa5d4cfbecf9cfda07ab7bd85d5310])
1 Sent by server sante.gouv.fr
Fingerprint SHA256: 00c0e051003794e6cefed359febeabb680aa5d4cfbecf9cfda07ab7bd85d5310
Pin SHA256: u9+7n+RjyEbVkNSyyO+mhipUoVTKUhsVIjGWvOAMZYw=

RSA 3072 bits (e 65537) / SHA256withRSA
CRL ERROR: IOException occurred
2 Sent by server Certigna Services CA
Fingerprint SHA256: 71e653bfbf5e72515b4099bbd5ec8872812b47c6ec1fa9add327e1c92c9ea16d
Pin SHA256: Vvyvg4+bOEbI6aO7K28ioVsUfckLqCSKqlIqZTEB/uE=

RSA 4096 bits (e 65537) / SHA256withRSA
CRL ERROR: IOException occurred
3 In trust store Certigna   Self-signed
Fingerprint SHA256: e3b6a2db2ed7ce48842f7ac53241c7b71d54144bfb40c11f3f1d0b42f5eea12d
Pin SHA256: UQ0g5cR/Y89mayD2GvYrwJmkKsgk/6RDotp8kLGAipE=

RSA 2048 bits (e 65537) / SHA1withRSA
Weak or insecure signature, but no impact on root certificate
Path #1: Not trusted (invalid certificate [Fingerprint SHA256: 00c0e051003794e6cefed359febeabb680aa5d4cfbecf9cfda07ab7bd85d5310])
1 Sent by server sante.gouv.fr
Fingerprint SHA256: 00c0e051003794e6cefed359febeabb680aa5d4cfbecf9cfda07ab7bd85d5310
Pin SHA256: u9+7n+RjyEbVkNSyyO+mhipUoVTKUhsVIjGWvOAMZYw=

RSA 3072 bits (e 65537) / SHA256withRSA
CRL ERROR: IOException occurred
2 Sent by server Certigna Services CA
Fingerprint SHA256: 71e653bfbf5e72515b4099bbd5ec8872812b47c6ec1fa9add327e1c92c9ea16d
Pin SHA256: Vvyvg4+bOEbI6aO7K28ioVsUfckLqCSKqlIqZTEB/uE=

RSA 4096 bits (e 65537) / SHA256withRSA
CRL ERROR: IOException occurred
3 In trust store Certigna   Self-signed
Fingerprint SHA256: e3b6a2db2ed7ce48842f7ac53241c7b71d54144bfb40c11f3f1d0b42f5eea12d
Pin SHA256: UQ0g5cR/Y89mayD2GvYrwJmkKsgk/6RDotp8kLGAipE=

RSA 2048 bits (e 65537) / SHA1withRSA
Weak or insecure signature, but no impact on root certificate
Path #1: Not trusted (invalid certificate [Fingerprint SHA256: 00c0e051003794e6cefed359febeabb680aa5d4cfbecf9cfda07ab7bd85d5310])
1 Sent by server sante.gouv.fr
Fingerprint SHA256: 00c0e051003794e6cefed359febeabb680aa5d4cfbecf9cfda07ab7bd85d5310
Pin SHA256: u9+7n+RjyEbVkNSyyO+mhipUoVTKUhsVIjGWvOAMZYw=

RSA 3072 bits (e 65537) / SHA256withRSA
CRL ERROR: IOException occurred
2 Sent by server Certigna Services CA
Fingerprint SHA256: 71e653bfbf5e72515b4099bbd5ec8872812b47c6ec1fa9add327e1c92c9ea16d
Pin SHA256: Vvyvg4+bOEbI6aO7K28ioVsUfckLqCSKqlIqZTEB/uE=

RSA 4096 bits (e 65537) / SHA256withRSA
CRL ERROR: IOException occurred
3 In trust store Certigna   Self-signed
Fingerprint SHA256: e3b6a2db2ed7ce48842f7ac53241c7b71d54144bfb40c11f3f1d0b42f5eea12d
Pin SHA256: UQ0g5cR/Y89mayD2GvYrwJmkKsgk/6RDotp8kLGAipE=

RSA 2048 bits (e 65537) / SHA1withRSA
Weak or insecure signature, but no impact on root certificate
Path #1: Not trusted (invalid certificate [Fingerprint SHA256: 00c0e051003794e6cefed359febeabb680aa5d4cfbecf9cfda07ab7bd85d5310])
1 Sent by server sante.gouv.fr
Fingerprint SHA256: 00c0e051003794e6cefed359febeabb680aa5d4cfbecf9cfda07ab7bd85d5310
Pin SHA256: u9+7n+RjyEbVkNSyyO+mhipUoVTKUhsVIjGWvOAMZYw=

RSA 3072 bits (e 65537) / SHA256withRSA
CRL ERROR: IOException occurred
2 Sent by server Certigna Services CA
Fingerprint SHA256: 71e653bfbf5e72515b4099bbd5ec8872812b47c6ec1fa9add327e1c92c9ea16d
Pin SHA256: Vvyvg4+bOEbI6aO7K28ioVsUfckLqCSKqlIqZTEB/uE=

RSA 4096 bits (e 65537) / SHA256withRSA
CRL ERROR: IOException occurred
3 In trust store Certigna   Self-signed
Fingerprint SHA256: e3b6a2db2ed7ce48842f7ac53241c7b71d54144bfb40c11f3f1d0b42f5eea12d
Pin SHA256: UQ0g5cR/Y89mayD2GvYrwJmkKsgk/6RDotp8kLGAipE=

RSA 2048 bits (e 65537) / SHA1withRSA
Weak or insecure signature, but no impact on root certificate

Click here to expand

Configuration
Protocols
TLS 1.3 No
TLS 1.2 Yes
TLS 1.1 No
TLS 1.0 No
SSL 3 No
SSL 2 No


Cipher Suites
# TLS 1.2 (suites in server-preferred order)
TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (0xc030)   ECDH secp256r1 (eq. 3072 bits RSA)   FS 256
TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 (0xc02f)   ECDH secp256r1 (eq. 3072 bits RSA)   FS 128


Handshake Simulation
Android 4.4.2 RSA 3072 (SHA256)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH secp256r1  FS
Android 5.0.0 RSA 3072 (SHA256)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256   ECDH secp256r1  FS
Android 6.0 RSA 3072 (SHA256)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256   ECDH secp256r1  FS
Android 7.0 RSA 3072 (SHA256)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH secp256r1  FS
Android 8.0 RSA 3072 (SHA256)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH secp256r1  FS
Android 8.1 RSA 3072 (SHA256)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH secp256r1  FS
Android 9.0 RSA 3072 (SHA256)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH secp256r1  FS
BingPreview Jan 2015 RSA 3072 (SHA256)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH secp256r1  FS
Chrome 49 / XP SP3 RSA 3072 (SHA256)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256   ECDH secp256r1  FS
Chrome 69 / Win 7  R RSA 3072 (SHA256)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH secp256r1  FS
Chrome 70 / Win 10 RSA 3072 (SHA256)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH secp256r1  FS
Chrome 80 / Win 10  R RSA 3072 (SHA256)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH secp256r1  FS
Firefox 31.3.0 ESR / Win 7 RSA 3072 (SHA256)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256   ECDH secp256r1  FS
Firefox 47 / Win 7  R RSA 3072 (SHA256)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256   ECDH secp256r1  FS
Firefox 49 / XP SP3 RSA 3072 (SHA256)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH secp256r1  FS
Firefox 62 / Win 7  R RSA 3072 (SHA256)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH secp256r1  FS
Firefox 73 / Win 10  R RSA 3072 (SHA256)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH secp256r1  FS
Googlebot Feb 2018 RSA 3072 (SHA256)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH secp256r1  FS
IE 11 / Win 7  R Server sent fatal alert: handshake_failure
IE 11 / Win 8.1  R Server sent fatal alert: handshake_failure
IE 11 / Win Phone 8.1  R Server sent fatal alert: handshake_failure
IE 11 / Win Phone 8.1 Update  R Server sent fatal alert: handshake_failure
IE 11 / Win 10  R RSA 3072 (SHA256)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH secp256r1  FS
Edge 15 / Win 10  R RSA 3072 (SHA256)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH secp256r1  FS
Edge 16 / Win 10  R RSA 3072 (SHA256)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH secp256r1  FS
Edge 18 / Win 10  R RSA 3072 (SHA256)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH secp256r1  FS
Edge 13 / Win Phone 10  R RSA 3072 (SHA256)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH secp256r1  FS
Java 8u161 RSA 3072 (SHA256)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH secp256r1  FS
Java 11.0.3 RSA 3072 (SHA256)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH secp256r1  FS
Java 12.0.1 RSA 3072 (SHA256)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH secp256r1  FS
OpenSSL 1.0.1l  R RSA 3072 (SHA256)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH secp256r1  FS
OpenSSL 1.0.2s  R RSA 3072 (SHA256)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH secp256r1  FS
OpenSSL 1.1.0k  R RSA 3072 (SHA256)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH secp256r1  FS
OpenSSL 1.1.1c  R RSA 3072 (SHA256)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH secp256r1  FS
Safari 6 / iOS 6.0.1 Server sent fatal alert: handshake_failure
Safari 7 / iOS 7.1  R Server sent fatal alert: handshake_failure
Safari 7 / OS X 10.9  R Server sent fatal alert: handshake_failure
Safari 8 / iOS 8.4  R Server sent fatal alert: handshake_failure
Safari 8 / OS X 10.10  R Server sent fatal alert: handshake_failure
Safari 9 / iOS 9  R RSA 3072 (SHA256)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH secp256r1  FS
Safari 9 / OS X 10.11  R RSA 3072 (SHA256)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH secp256r1  FS
Safari 10 / iOS 10  R RSA 3072 (SHA256)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH secp256r1  FS
Safari 10 / OS X 10.12  R RSA 3072 (SHA256)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH secp256r1  FS
Safari 12.1.2 / MacOS 10.14.6 Beta  R RSA 3072 (SHA256)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH secp256r1  FS
Safari 12.1.1 / iOS 12.3.1  R RSA 3072 (SHA256)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH secp256r1  FS
Apple ATS 9 / iOS 9  R RSA 3072 (SHA256)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH secp256r1  FS
Yahoo Slurp Jan 2015 RSA 3072 (SHA256)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH secp256r1  FS
YandexBot Jan 2015 RSA 3072 (SHA256)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   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)

Click here to expand

(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 Yes
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)  
GOLDENDOODLE No (more info)  
OpenSSL 0-Length No (more info)  
Sleeping POODLE No (more info)  
Downgrade attack prevention Unknown (requires support for at least two protocols, excl. SSL2)
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 No
NPN No
Session resumption (caching) Yes
Session resumption (tickets) No
OCSP stapling No
Strict Transport Security (HSTS) Yes
max-age=31536000
HSTS Preloading Not in: 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 secp256r1, x25519, secp384r1 (server preferred order)
SSL 2 handshake compatibility Yes


HTTP Requests
1 https://travail.gouv.fr/  (HTTP/1.1 200 OK)
1
Date Tue, 22 Jul 2025 07:20:19 GMT
X-Spip-Cache 21600
X-Frame-Options SAMEORIGIN
Last-Modified Tue, 22 Jul 2025 07:20:19 GMT
Vary Accept-Encoding
X-Content-Type-Options nosniff
Transfer-Encoding chunked
Content-Type text/html; charset=utf-8
Connection close
Set-Cookie BIGipServerpool-dicom-portail-dares.cegedim.cloud-HTTP=!q0z9V3/ECRErVvCQEus9KsUIQe0YeTftoIEoDmtFC9eaoZa8BKCAgI5MEYePncbvQ2L3i2bh3xNSOu1WDzlG5b3F5H8i; path=/; Httponly; Secure
Strict-Transport-Security max-age=31536000
Set-Cookie TS1349abd5027=087dc22938ab2000a2cb1e7714a4cc879a2981661f5f7699752322866cb0e6a964c0cdec0d1d45b708f0bee94d11300023314b8b26c1979c1e5ae6e71c3b6bfcf87c246d2aa42b036ca886641e44a495bcdd115674deedeb2a06b0ad4f3ea8c8; Path=/


Miscellaneous
Test date Tue, 22 Jul 2025 07:20:06 UTC
Test duration 58.9 seconds
HTTP status code 200
HTTP server signature -
Server hostname -


Why is my certificate not trusted?

There are many reasons why a certificate may not be trusted. The exact problem is indicated on the report card in bright red. The problems fall into three categories:

  1. Invalid certificate
  2. Invalid configuration
  3. Unknown Certificate Authority

1. Invalid certificate

A certificate is invalid if:

2. Invalid configuration

In some cases, the certificate chain does not contain all the necessary certificates to connect the web server certificate to one of the root certificates in our trust store. Less commonly, one of the certificates in the chain (other than the web server certificate) will have expired, and that invalidates the entire chain.

3. Unknown Certificate Authority

In order for trust to be established, we must have the root certificate of the signing Certificate Authority in our trust store. SSL Labs does not maintain its own trust store; instead we use the store maintained by Mozilla.

If we mark a web site as not trusted, that means that the average web user's browser will not trust it either. For certain special groups of users, such web sites can still be secure. For example, if you can securely verify that a self-signed web site is operated by a person you trust, then you can trust that self-signed web site too. Or, if you work for an organisation that manages its own trust, and you have their own root certificate already embedded in your browser. Such special cases do not work for the general public, however, and this is what we indicate on our report card.

4. Interoperability issues

In some rare cases trust cannot be established because of interoperability issues between our code and the code or configuration running on the server. We manually review such cases, but if you encounter such an issue please feel free to contact us. Such problems are very difficult to troubleshoot and you may be able to provide us with information that might help us determine the root cause.

SSL Report v2.4.1