SSL Report: www.tumblr.com (192.0.77.40)
Assessed on:  Mon, 09 Jun 2025 08:00:57 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
A+
0
20
40
60
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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: EC 256 bits (SHA256withECDSA)
Server Key and Certificate #1
Subject *.tumblr.com
Fingerprint SHA256: 940d5b51168a1728491a83d94e7ddd27b330c28ae9fb82650f7bd54d0dff3249
Pin SHA256: SWAm/EBQhithT2uqMVpLd3hor14+oAaqj8hh3V7q2/c=
Common names *.tumblr.com
Alternative names *.tumblr.com tumblr.com
Serial Number 785eec4e1a2248fa9559c233be1ece81
Valid from Tue, 25 Feb 2025 00:00:00 UTC
Valid until Thu, 26 Mar 2026 23:59:59 UTC (expires in 9 months and 17 days)
Key EC 256 bits
Weak key (Debian) No
Issuer Sectigo ECC Domain Validation Secure Server CA
AIA: http://crt.sectigo.com/SectigoECCDomainValidationSecureServerCA.crt
Signature algorithm SHA256withECDSA
Extended Validation No
Certificate Transparency Yes (certificate)
OCSP Must Staple No
Revocation information OCSP
OCSP: http://ocsp.sectigo.com
Revocation status Good (not revoked)
DNS CAA Yes
policy host: tumblr.com
issue: comodoca.com flags:0
issue: letsencrypt.org flags:0
issue: digicert.com flags:0
iodef: mailto:content-delivery+caa@tumblr.com flags:0
issue: pki.goog flags:0
Trusted Yes
Mozilla  Apple  Android  Java  Windows 


Additional Certificates (if supplied)
Certificates provided 3 (3110 bytes)
Chain issues None
#2
Subject Sectigo ECC Domain Validation Secure Server CA
Fingerprint SHA256: 61e97375e9f6da982ff5c19e2f94e66c4e35b6837ce3b914d2245c7f5f65825f
Pin SHA256: 6YBE8kK4d5J1qu1wEjyoKqzEIvyRY5HyM/NB2wKdcZo=
Valid until Tue, 31 Dec 2030 23:59:59 UTC (expires in 5 years and 6 months)
Key EC 256 bits
Issuer USERTrust ECC Certification Authority
Signature algorithm SHA384withECDSA
#3
Subject USERTrust ECC Certification Authority
Fingerprint SHA256: a6cf64dbb4c8d5fd19ce48896068db03b533a8d1336c6256a87d00cbb3def3ea
Pin SHA256: ICGRfpgmOUXIWcQ/HXPLQTkFPEFPoDyjvH7ohhQpjzs=
Valid until Sun, 31 Dec 2028 23:59:59 UTC (expires in 3 years and 6 months)
Key EC 384 bits
Issuer AAA Certificate Services
Signature algorithm SHA384withRSA


Certification Paths
Path #1: Trusted
1 Sent by server *.tumblr.com
Fingerprint SHA256: 940d5b51168a1728491a83d94e7ddd27b330c28ae9fb82650f7bd54d0dff3249
Pin SHA256: SWAm/EBQhithT2uqMVpLd3hor14+oAaqj8hh3V7q2/c=

EC 256 bits / SHA256withECDSA
2 Sent by server Sectigo ECC Domain Validation Secure Server CA
Fingerprint SHA256: 61e97375e9f6da982ff5c19e2f94e66c4e35b6837ce3b914d2245c7f5f65825f
Pin SHA256: 6YBE8kK4d5J1qu1wEjyoKqzEIvyRY5HyM/NB2wKdcZo=

EC 256 bits / SHA384withECDSA
3 In trust store USERTrust ECC Certification Authority   Self-signed
Fingerprint SHA256: 4ff460d54b9c86dabfbcfc5712e0400d2bed3fbc4d4fbdaa86e06adcd2a9ad7a
Pin SHA256: ICGRfpgmOUXIWcQ/HXPLQTkFPEFPoDyjvH7ohhQpjzs=

EC 384 bits / SHA384withECDSA
Path #2: Trusted
1 Sent by server *.tumblr.com
Fingerprint SHA256: 940d5b51168a1728491a83d94e7ddd27b330c28ae9fb82650f7bd54d0dff3249
Pin SHA256: SWAm/EBQhithT2uqMVpLd3hor14+oAaqj8hh3V7q2/c=

EC 256 bits / SHA256withECDSA
2 Sent by server Sectigo ECC Domain Validation Secure Server CA
Fingerprint SHA256: 61e97375e9f6da982ff5c19e2f94e66c4e35b6837ce3b914d2245c7f5f65825f
Pin SHA256: 6YBE8kK4d5J1qu1wEjyoKqzEIvyRY5HyM/NB2wKdcZo=

EC 256 bits / SHA384withECDSA
3 Sent by server USERTrust ECC Certification Authority
Fingerprint SHA256: a6cf64dbb4c8d5fd19ce48896068db03b533a8d1336c6256a87d00cbb3def3ea
Pin SHA256: ICGRfpgmOUXIWcQ/HXPLQTkFPEFPoDyjvH7ohhQpjzs=

EC 384 bits / SHA384withRSA
4 In trust store AAA Certificate Services   Self-signed
Fingerprint SHA256: d7a7a0fb5d7e2731d771e9484ebcdef71d5f0c3e0a2948782bc83ee0ea699ef4
Pin SHA256: vRU+17BDT2iGsXvOi76E7TQMcTLXAqj0+jGPdW7L1vM=

RSA 2048 bits (e 65537) / SHA1withRSA
Weak or insecure signature, but no impact on root certificate
Path #1: Trusted
1 Sent by server *.tumblr.com
Fingerprint SHA256: 940d5b51168a1728491a83d94e7ddd27b330c28ae9fb82650f7bd54d0dff3249
Pin SHA256: SWAm/EBQhithT2uqMVpLd3hor14+oAaqj8hh3V7q2/c=

EC 256 bits / SHA256withECDSA
2 Sent by server Sectigo ECC Domain Validation Secure Server CA
Fingerprint SHA256: 61e97375e9f6da982ff5c19e2f94e66c4e35b6837ce3b914d2245c7f5f65825f
Pin SHA256: 6YBE8kK4d5J1qu1wEjyoKqzEIvyRY5HyM/NB2wKdcZo=

EC 256 bits / SHA384withECDSA
3 In trust store USERTrust ECC Certification Authority   Self-signed
Fingerprint SHA256: 4ff460d54b9c86dabfbcfc5712e0400d2bed3fbc4d4fbdaa86e06adcd2a9ad7a
Pin SHA256: ICGRfpgmOUXIWcQ/HXPLQTkFPEFPoDyjvH7ohhQpjzs=

EC 384 bits / SHA384withECDSA
Path #2: Trusted
1 Sent by server *.tumblr.com
Fingerprint SHA256: 940d5b51168a1728491a83d94e7ddd27b330c28ae9fb82650f7bd54d0dff3249
Pin SHA256: SWAm/EBQhithT2uqMVpLd3hor14+oAaqj8hh3V7q2/c=

EC 256 bits / SHA256withECDSA
2 Sent by server Sectigo ECC Domain Validation Secure Server CA
Fingerprint SHA256: 61e97375e9f6da982ff5c19e2f94e66c4e35b6837ce3b914d2245c7f5f65825f
Pin SHA256: 6YBE8kK4d5J1qu1wEjyoKqzEIvyRY5HyM/NB2wKdcZo=

EC 256 bits / SHA384withECDSA
3 Sent by server USERTrust ECC Certification Authority
Fingerprint SHA256: a6cf64dbb4c8d5fd19ce48896068db03b533a8d1336c6256a87d00cbb3def3ea
Pin SHA256: ICGRfpgmOUXIWcQ/HXPLQTkFPEFPoDyjvH7ohhQpjzs=

EC 384 bits / SHA384withRSA
4 In trust store AAA Certificate Services   Self-signed
Fingerprint SHA256: d7a7a0fb5d7e2731d771e9484ebcdef71d5f0c3e0a2948782bc83ee0ea699ef4
Pin SHA256: vRU+17BDT2iGsXvOi76E7TQMcTLXAqj0+jGPdW7L1vM=

RSA 2048 bits (e 65537) / SHA1withRSA
Weak or insecure signature, but no impact on root certificate
Path #1: Trusted
1 Sent by server *.tumblr.com
Fingerprint SHA256: 940d5b51168a1728491a83d94e7ddd27b330c28ae9fb82650f7bd54d0dff3249
Pin SHA256: SWAm/EBQhithT2uqMVpLd3hor14+oAaqj8hh3V7q2/c=

EC 256 bits / SHA256withECDSA
2 Sent by server Sectigo ECC Domain Validation Secure Server CA
Fingerprint SHA256: 61e97375e9f6da982ff5c19e2f94e66c4e35b6837ce3b914d2245c7f5f65825f
Pin SHA256: 6YBE8kK4d5J1qu1wEjyoKqzEIvyRY5HyM/NB2wKdcZo=

EC 256 bits / SHA384withECDSA
3 In trust store USERTrust ECC Certification Authority   Self-signed
Fingerprint SHA256: 4ff460d54b9c86dabfbcfc5712e0400d2bed3fbc4d4fbdaa86e06adcd2a9ad7a
Pin SHA256: ICGRfpgmOUXIWcQ/HXPLQTkFPEFPoDyjvH7ohhQpjzs=

EC 384 bits / SHA384withECDSA
Path #2: Trusted
1 Sent by server *.tumblr.com
Fingerprint SHA256: 940d5b51168a1728491a83d94e7ddd27b330c28ae9fb82650f7bd54d0dff3249
Pin SHA256: SWAm/EBQhithT2uqMVpLd3hor14+oAaqj8hh3V7q2/c=

EC 256 bits / SHA256withECDSA
2 Sent by server Sectigo ECC Domain Validation Secure Server CA
Fingerprint SHA256: 61e97375e9f6da982ff5c19e2f94e66c4e35b6837ce3b914d2245c7f5f65825f
Pin SHA256: 6YBE8kK4d5J1qu1wEjyoKqzEIvyRY5HyM/NB2wKdcZo=

EC 256 bits / SHA384withECDSA
3 Sent by server USERTrust ECC Certification Authority
Fingerprint SHA256: a6cf64dbb4c8d5fd19ce48896068db03b533a8d1336c6256a87d00cbb3def3ea
Pin SHA256: ICGRfpgmOUXIWcQ/HXPLQTkFPEFPoDyjvH7ohhQpjzs=

EC 384 bits / SHA384withRSA
4 In trust store AAA Certificate Services   Self-signed
Fingerprint SHA256: d7a7a0fb5d7e2731d771e9484ebcdef71d5f0c3e0a2948782bc83ee0ea699ef4
Pin SHA256: vRU+17BDT2iGsXvOi76E7TQMcTLXAqj0+jGPdW7L1vM=

RSA 2048 bits (e 65537) / SHA1withRSA
Weak or insecure signature, but no impact on root certificate
Path #1: Trusted
1 Sent by server *.tumblr.com
Fingerprint SHA256: 940d5b51168a1728491a83d94e7ddd27b330c28ae9fb82650f7bd54d0dff3249
Pin SHA256: SWAm/EBQhithT2uqMVpLd3hor14+oAaqj8hh3V7q2/c=

EC 256 bits / SHA256withECDSA
2 Sent by server Sectigo ECC Domain Validation Secure Server CA
Fingerprint SHA256: 61e97375e9f6da982ff5c19e2f94e66c4e35b6837ce3b914d2245c7f5f65825f
Pin SHA256: 6YBE8kK4d5J1qu1wEjyoKqzEIvyRY5HyM/NB2wKdcZo=

EC 256 bits / SHA384withECDSA
3 In trust store USERTrust ECC Certification Authority   Self-signed
Fingerprint SHA256: 4ff460d54b9c86dabfbcfc5712e0400d2bed3fbc4d4fbdaa86e06adcd2a9ad7a
Pin SHA256: ICGRfpgmOUXIWcQ/HXPLQTkFPEFPoDyjvH7ohhQpjzs=

EC 384 bits / SHA384withECDSA
Path #2: Trusted
1 Sent by server *.tumblr.com
Fingerprint SHA256: 940d5b51168a1728491a83d94e7ddd27b330c28ae9fb82650f7bd54d0dff3249
Pin SHA256: SWAm/EBQhithT2uqMVpLd3hor14+oAaqj8hh3V7q2/c=

EC 256 bits / SHA256withECDSA
2 Sent by server Sectigo ECC Domain Validation Secure Server CA
Fingerprint SHA256: 61e97375e9f6da982ff5c19e2f94e66c4e35b6837ce3b914d2245c7f5f65825f
Pin SHA256: 6YBE8kK4d5J1qu1wEjyoKqzEIvyRY5HyM/NB2wKdcZo=

EC 256 bits / SHA384withECDSA
3 Sent by server USERTrust ECC Certification Authority
Fingerprint SHA256: a6cf64dbb4c8d5fd19ce48896068db03b533a8d1336c6256a87d00cbb3def3ea
Pin SHA256: ICGRfpgmOUXIWcQ/HXPLQTkFPEFPoDyjvH7ohhQpjzs=

EC 384 bits / SHA384withRSA
4 In trust store AAA Certificate Services   Self-signed
Fingerprint SHA256: d7a7a0fb5d7e2731d771e9484ebcdef71d5f0c3e0a2948782bc83ee0ea699ef4
Pin SHA256: vRU+17BDT2iGsXvOi76E7TQMcTLXAqj0+jGPdW7L1vM=

RSA 2048 bits (e 65537) / SHA1withRSA
Weak or insecure signature, but no impact on root certificate
Path #1: Trusted
1 Sent by server *.tumblr.com
Fingerprint SHA256: 940d5b51168a1728491a83d94e7ddd27b330c28ae9fb82650f7bd54d0dff3249
Pin SHA256: SWAm/EBQhithT2uqMVpLd3hor14+oAaqj8hh3V7q2/c=

EC 256 bits / SHA256withECDSA
2 Sent by server Sectigo ECC Domain Validation Secure Server CA
Fingerprint SHA256: 61e97375e9f6da982ff5c19e2f94e66c4e35b6837ce3b914d2245c7f5f65825f
Pin SHA256: 6YBE8kK4d5J1qu1wEjyoKqzEIvyRY5HyM/NB2wKdcZo=

EC 256 bits / SHA384withECDSA
3 In trust store USERTrust ECC Certification Authority   Self-signed
Fingerprint SHA256: 4ff460d54b9c86dabfbcfc5712e0400d2bed3fbc4d4fbdaa86e06adcd2a9ad7a
Pin SHA256: ICGRfpgmOUXIWcQ/HXPLQTkFPEFPoDyjvH7ohhQpjzs=

EC 384 bits / SHA384withECDSA
Path #2: Trusted
1 Sent by server *.tumblr.com
Fingerprint SHA256: 940d5b51168a1728491a83d94e7ddd27b330c28ae9fb82650f7bd54d0dff3249
Pin SHA256: SWAm/EBQhithT2uqMVpLd3hor14+oAaqj8hh3V7q2/c=

EC 256 bits / SHA256withECDSA
2 Sent by server Sectigo ECC Domain Validation Secure Server CA
Fingerprint SHA256: 61e97375e9f6da982ff5c19e2f94e66c4e35b6837ce3b914d2245c7f5f65825f
Pin SHA256: 6YBE8kK4d5J1qu1wEjyoKqzEIvyRY5HyM/NB2wKdcZo=

EC 256 bits / SHA384withECDSA
3 Sent by server USERTrust ECC Certification Authority
Fingerprint SHA256: a6cf64dbb4c8d5fd19ce48896068db03b533a8d1336c6256a87d00cbb3def3ea
Pin SHA256: ICGRfpgmOUXIWcQ/HXPLQTkFPEFPoDyjvH7ohhQpjzs=

EC 384 bits / SHA384withRSA
4 In trust store AAA Certificate Services   Self-signed
Fingerprint SHA256: d7a7a0fb5d7e2731d771e9484ebcdef71d5f0c3e0a2948782bc83ee0ea699ef4
Pin SHA256: vRU+17BDT2iGsXvOi76E7TQMcTLXAqj0+jGPdW7L1vM=

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 Yes
TLS 1.2 Yes
TLS 1.1 No
TLS 1.0 No
SSL 3 No
SSL 2 No


Cipher Suites
# TLS 1.3 (server has no preference)
TLS_AES_128_GCM_SHA256 (0x1301)   ECDH x25519 (eq. 3072 bits RSA)   FS 128
TLS_AES_256_GCM_SHA384 (0x1302)   ECDH x25519 (eq. 3072 bits RSA)   FS 256
TLS_CHACHA20_POLY1305_SHA256 (0x1303)   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_SHA (0xc009)   ECDH x25519 (eq. 3072 bits RSA)   FS   WEAK 128
TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA (0xc00a)   ECDH x25519 (eq. 3072 bits RSA)   FS   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 Server sent fatal alert: handshake_failure
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_CHACHA20_POLY1305_SHA256   ECDH x25519  FS
OpenSSL 1.1.1c  R -   TLS 1.3 TLS_AES_256_GCM_SHA384   ECDH x25519  FS
Safari 6 / iOS 6.0.1 EC 256 (SHA256)   TLS 1.2 TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA   ECDH secp256r1  FS
Safari 7 / iOS 7.1  R EC 256 (SHA256)   TLS 1.2 TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA   ECDH secp256r1  FS
Safari 7 / OS X 10.9  R EC 256 (SHA256)   TLS 1.2 TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA   ECDH secp256r1  FS
Safari 8 / iOS 8.4  R EC 256 (SHA256)   TLS 1.2 TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA   ECDH secp256r1  FS
Safari 8 / OS X 10.10  R EC 256 (SHA256)   TLS 1.2 TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA   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)

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 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 : 0xc009
GOLDENDOODLE No (more info)   TLS 1.2 : 0xc009
OpenSSL 0-Length No (more info)   TLS 1.2 : 0xc009
Sleeping POODLE No (more info)   TLS 1.2 : 0xc009
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 assigned but not accepted)
Session resumption (tickets) Yes
OCSP stapling No
Strict Transport Security (HSTS) Yes
max-age=31536000; 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://www.tumblr.com/  (HTTP/1.1 200 OK)
1
Server nginx
Date Mon, 09 Jun 2025 08:00:57 GMT
Content-Type text/html; charset=utf-8
Content-Length 114025
Connection close
Vary Accept-Encoding
Vary Accept-Encoding
x-rid b2b6011594275119840af01c2575cc09
Content-Security-Policy script-src 'self' 'unsafe-eval' 'unsafe-inline' https://www.recaptcha.net https://c0.pubmine.com https://s.pubmine.com https://criteo.com https://*.criteo.com https://criteo.net https://*.criteo.net https://*.vexowi.com https://vexowi.com https://c.amazon-adsystem.com https://*.3lift.com https://3lift.com https://z.moatads.com https://*.moatads.com https://*.smartadserver.com https://app.link https://*.sascdn.com https://securepubads.g.doubleclick.net https://tpc.googlesyndication.com https://www.googletagservices.com/ https://cdn.parsely.com https://a.teads.tv/analytics/tag.js https://assets.tumblr.com https://ads.pubmatic.com https://cdn.jsdelivr.net https://*.privacymanager.io https://*.rlcdn.com https://flsrv.net https://*.flsrv.net https://edge.atmtd.com https://scripts.atmtd.com https://cdn.id5-sync.com https://assets.tumblr.com/pop/ 'nonce-Y2NhY2ZjZjg1MDU3ODhkZjZlNDliY2Q0ODQ4ZTg1Mzk='; report-uri /svc/cspreports; object-src 'none'; worker-src blob: 'self'; base-uri 'self'
X-Content-Type-Options nosniff
X-Xss-Protection 1; mode=block
X-Frame-Options deny
Cache-Control public, max-age=0, s-maxage=60, must-revalidate
Vary x-ua-device, Accept-Language
ETag W/"1bd69-/ZJr3SOIQZCRmT10Y+T8m/Xwg9s"
X-Response-Time 80ms
Alt-Svc h3=":443"; ma=86400
X-nc HIT sjc 1
Server-Timing a8c-cdn, dc;desc=sjc, cache;desc=HIT;dur=0.001
Strict-Transport-Security max-age=31536000; preload


Miscellaneous
Test date Mon, 09 Jun 2025 08:00:14 UTC
Test duration 42.377 seconds
HTTP status code 200
HTTP server signature nginx
Server hostname assets.tumblr.com


SSL Report v2.4.0