SSL Server Test: twitter.com (Powered by Qualys SSL Labs)

SSL Report: twitter.com (172.66.0.227)

Assessed on: Sat, 16 Aug 2025 02:18:01 UTC | HIDDEN | 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+

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 site works only in browsers with SNI support.

This server supports TLS 1.3. MORE INFO »

HTTP Strict Transport Security (HSTS) with long duration deployed on this server. MORE INFO »

Certificate #1: EC 256 bits (SHA384withECDSA)

Server Key and Certificate #1
Subject	twitter.com Fingerprint SHA256: 80e5b3642962f0ed23ff9a5b5c971dc79b12ad93f9f4d5a3e7bda6eea17d0b29 Pin SHA256: SxtvVGSBIIuw4APmzcYIKt3pdTPeKVEnKNc+8weWID4=
Common names	twitter.com
Alternative names	*.twitter.com cdn.syndication.twitter.com twitter.com
Serial Number	053e10c5d47d7fb5ff1c87a1fd7909999b62
Valid from	Wed, 25 Jun 2025 19:36:52 UTC
Valid until	Tue, 23 Sep 2025 19:36:51 UTC (expires in 1 month and 6 days)
Key	EC 256 bits
Weak key (Debian)	No
Issuer	E6 AIA: http://e6.i.lencr.org/
Signature algorithm	SHA384withECDSA
Extended Validation	No
Certificate Transparency	Yes (certificate)
OCSP Must Staple	No
Revocation information	CRL CRL: http://e6.c.lencr.org/99.crl
Revocation status	Validation error CRL ERROR: IOException occurred
DNS CAA	No (more info)
Trusted	Yes Mozilla Apple Android Java Windows

Additional Certificates (if supplied)
Certificates provided	2 (2061 bytes)
Chain issues	None
#2
Subject	E6 Fingerprint SHA256: 76e9e288aafc0e37f4390cbf946aad997d5c1c901b3ce513d3d8fadbabe2ab85 Pin SHA256: 0Bbh/jEZSKymTy3kTOhsmlHKBB32EDu1KojrP3YfV9c=
Valid until	Fri, 12 Mar 2027 23:59:59 UTC (expires in 1 year and 6 months)
Key	EC 384 bits
Issuer	ISRG Root X1
Signature algorithm	SHA256withRSA

Certification Paths


Path #1: Trusted
1	Sent by server	twitter.com Fingerprint SHA256: 80e5b3642962f0ed23ff9a5b5c971dc79b12ad93f9f4d5a3e7bda6eea17d0b29 Pin SHA256: SxtvVGSBIIuw4APmzcYIKt3pdTPeKVEnKNc+8weWID4= EC 256 bits / SHA384withECDSA CRL ERROR: IOException occurred
2	Sent by server	E6 Fingerprint SHA256: 76e9e288aafc0e37f4390cbf946aad997d5c1c901b3ce513d3d8fadbabe2ab85 Pin SHA256: 0Bbh/jEZSKymTy3kTOhsmlHKBB32EDu1KojrP3YfV9c= EC 384 bits / SHA256withRSA CRL ERROR: IOException occurred
3	In trust store	ISRG Root X1 Self-signed Fingerprint SHA256: 96bcec06264976f37460779acf28c5a7cfe8a3c0aae11a8ffcee05c0bddf08c6 Pin SHA256: C5+lpZ7tcVwmwQIMcRtPbsQtWLABXhQzejna0wHFr8M= RSA 4096 bits (e 65537) / SHA256withRSA
Path #1: Trusted
1	Sent by server	twitter.com Fingerprint SHA256: 80e5b3642962f0ed23ff9a5b5c971dc79b12ad93f9f4d5a3e7bda6eea17d0b29 Pin SHA256: SxtvVGSBIIuw4APmzcYIKt3pdTPeKVEnKNc+8weWID4= EC 256 bits / SHA384withECDSA CRL ERROR: IOException occurred
2	Sent by server	E6 Fingerprint SHA256: 76e9e288aafc0e37f4390cbf946aad997d5c1c901b3ce513d3d8fadbabe2ab85 Pin SHA256: 0Bbh/jEZSKymTy3kTOhsmlHKBB32EDu1KojrP3YfV9c= EC 384 bits / SHA256withRSA CRL ERROR: IOException occurred
3	In trust store	ISRG Root X1 Self-signed Fingerprint SHA256: 96bcec06264976f37460779acf28c5a7cfe8a3c0aae11a8ffcee05c0bddf08c6 Pin SHA256: C5+lpZ7tcVwmwQIMcRtPbsQtWLABXhQzejna0wHFr8M= RSA 4096 bits (e 65537) / SHA256withRSA
Path #1: Trusted
1	Sent by server	twitter.com Fingerprint SHA256: 80e5b3642962f0ed23ff9a5b5c971dc79b12ad93f9f4d5a3e7bda6eea17d0b29 Pin SHA256: SxtvVGSBIIuw4APmzcYIKt3pdTPeKVEnKNc+8weWID4= EC 256 bits / SHA384withECDSA CRL ERROR: IOException occurred
2	Sent by server	E6 Fingerprint SHA256: 76e9e288aafc0e37f4390cbf946aad997d5c1c901b3ce513d3d8fadbabe2ab85 Pin SHA256: 0Bbh/jEZSKymTy3kTOhsmlHKBB32EDu1KojrP3YfV9c= EC 384 bits / SHA256withRSA CRL ERROR: IOException occurred
3	In trust store	ISRG Root X1 Self-signed Fingerprint SHA256: 96bcec06264976f37460779acf28c5a7cfe8a3c0aae11a8ffcee05c0bddf08c6 Pin SHA256: C5+lpZ7tcVwmwQIMcRtPbsQtWLABXhQzejna0wHFr8M= RSA 4096 bits (e 65537) / SHA256withRSA
Path #1: Trusted
1	Sent by server	twitter.com Fingerprint SHA256: 80e5b3642962f0ed23ff9a5b5c971dc79b12ad93f9f4d5a3e7bda6eea17d0b29 Pin SHA256: SxtvVGSBIIuw4APmzcYIKt3pdTPeKVEnKNc+8weWID4= EC 256 bits / SHA384withECDSA CRL ERROR: IOException occurred
2	Sent by server	E6 Fingerprint SHA256: 76e9e288aafc0e37f4390cbf946aad997d5c1c901b3ce513d3d8fadbabe2ab85 Pin SHA256: 0Bbh/jEZSKymTy3kTOhsmlHKBB32EDu1KojrP3YfV9c= EC 384 bits / SHA256withRSA CRL ERROR: IOException occurred
3	In trust store	ISRG Root X1 Self-signed Fingerprint SHA256: 96bcec06264976f37460779acf28c5a7cfe8a3c0aae11a8ffcee05c0bddf08c6 Pin SHA256: C5+lpZ7tcVwmwQIMcRtPbsQtWLABXhQzejna0wHFr8M= RSA 4096 bits (e 65537) / SHA256withRSA
Path #1: Trusted
1	Sent by server	twitter.com Fingerprint SHA256: 80e5b3642962f0ed23ff9a5b5c971dc79b12ad93f9f4d5a3e7bda6eea17d0b29 Pin SHA256: SxtvVGSBIIuw4APmzcYIKt3pdTPeKVEnKNc+8weWID4= EC 256 bits / SHA384withECDSA CRL ERROR: IOException occurred
2	Sent by server	E6 Fingerprint SHA256: 76e9e288aafc0e37f4390cbf946aad997d5c1c901b3ce513d3d8fadbabe2ab85 Pin SHA256: 0Bbh/jEZSKymTy3kTOhsmlHKBB32EDu1KojrP3YfV9c= EC 384 bits / SHA256withRSA CRL ERROR: IOException occurred
3	In trust store	ISRG Root X1 Self-signed Fingerprint SHA256: 96bcec06264976f37460779acf28c5a7cfe8a3c0aae11a8ffcee05c0bddf08c6 Pin SHA256: C5+lpZ7tcVwmwQIMcRtPbsQtWLABXhQzejna0wHFr8M= RSA 4096 bits (e 65537) / SHA256withRSA

Click here to expand

Certificate #2: RSA 2048 bits (SHA256withRSA)

Server Key and Certificate #1
Subject	twitter.com Fingerprint SHA256: da16c195418c6e2e2efae40507803df174359a7918a972435c66fd97e1d728e5 Pin SHA256: SFFj5MAi0PYjhIhBSPVX9zVgJvyhOqKysesparM++xc=
Common names	twitter.com
Alternative names	*.twitter.com cdn.syndication.twitter.com twitter.com
Serial Number	0521362248cc20cb1b4e91101c0c7bd65707
Valid from	Wed, 25 Jun 2025 19:36:46 UTC
Valid until	Tue, 23 Sep 2025 19:36:45 UTC (expires in 1 month and 6 days)
Key	RSA 2048 bits (e 65537)
Weak key (Debian)	No
Issuer	R10 AIA: http://r10.i.lencr.org/
Signature algorithm	SHA256withRSA
Extended Validation	No
Certificate Transparency	Yes (certificate)
OCSP Must Staple	No
Revocation information	CRL CRL: http://r10.c.lencr.org/8.crl
Revocation status	Validation error CRL ERROR: IOException occurred
DNS CAA	No (more info)
Trusted	Yes Mozilla Apple Android Java Windows

Additional Certificates (if supplied)
Certificates provided	2 (2601 bytes)
Chain issues	None
#2
Subject	R10 Fingerprint SHA256: 9d7c3f1aa6ad2b2ec0d5cf1e246f8d9ae6cbc9fd0755ad37bb974b1f2fb603f3 Pin SHA256: K7rZOrXHknnsEhUH8nLL4MZkejquUuIvOIr6tCa0rbo=
Valid until	Fri, 12 Mar 2027 23:59:59 UTC (expires in 1 year and 6 months)
Key	RSA 2048 bits (e 65537)
Issuer	ISRG Root X1
Signature algorithm	SHA256withRSA

Certification Paths


Path #1: Trusted
1	Sent by server	twitter.com Fingerprint SHA256: da16c195418c6e2e2efae40507803df174359a7918a972435c66fd97e1d728e5 Pin SHA256: SFFj5MAi0PYjhIhBSPVX9zVgJvyhOqKysesparM++xc= RSA 2048 bits (e 65537) / SHA256withRSA CRL ERROR: IOException occurred
2	Sent by server	R10 Fingerprint SHA256: 9d7c3f1aa6ad2b2ec0d5cf1e246f8d9ae6cbc9fd0755ad37bb974b1f2fb603f3 Pin SHA256: K7rZOrXHknnsEhUH8nLL4MZkejquUuIvOIr6tCa0rbo= RSA 2048 bits (e 65537) / SHA256withRSA CRL ERROR: IOException occurred
3	In trust store	ISRG Root X1 Self-signed Fingerprint SHA256: 96bcec06264976f37460779acf28c5a7cfe8a3c0aae11a8ffcee05c0bddf08c6 Pin SHA256: C5+lpZ7tcVwmwQIMcRtPbsQtWLABXhQzejna0wHFr8M= RSA 4096 bits (e 65537) / SHA256withRSA
Path #1: Trusted
1	Sent by server	twitter.com Fingerprint SHA256: da16c195418c6e2e2efae40507803df174359a7918a972435c66fd97e1d728e5 Pin SHA256: SFFj5MAi0PYjhIhBSPVX9zVgJvyhOqKysesparM++xc= RSA 2048 bits (e 65537) / SHA256withRSA CRL ERROR: IOException occurred
2	Sent by server	R10 Fingerprint SHA256: 9d7c3f1aa6ad2b2ec0d5cf1e246f8d9ae6cbc9fd0755ad37bb974b1f2fb603f3 Pin SHA256: K7rZOrXHknnsEhUH8nLL4MZkejquUuIvOIr6tCa0rbo= RSA 2048 bits (e 65537) / SHA256withRSA CRL ERROR: IOException occurred
3	In trust store	ISRG Root X1 Self-signed Fingerprint SHA256: 96bcec06264976f37460779acf28c5a7cfe8a3c0aae11a8ffcee05c0bddf08c6 Pin SHA256: C5+lpZ7tcVwmwQIMcRtPbsQtWLABXhQzejna0wHFr8M= RSA 4096 bits (e 65537) / SHA256withRSA
Path #1: Trusted
1	Sent by server	twitter.com Fingerprint SHA256: da16c195418c6e2e2efae40507803df174359a7918a972435c66fd97e1d728e5 Pin SHA256: SFFj5MAi0PYjhIhBSPVX9zVgJvyhOqKysesparM++xc= RSA 2048 bits (e 65537) / SHA256withRSA CRL ERROR: IOException occurred
2	Sent by server	R10 Fingerprint SHA256: 9d7c3f1aa6ad2b2ec0d5cf1e246f8d9ae6cbc9fd0755ad37bb974b1f2fb603f3 Pin SHA256: K7rZOrXHknnsEhUH8nLL4MZkejquUuIvOIr6tCa0rbo= RSA 2048 bits (e 65537) / SHA256withRSA CRL ERROR: IOException occurred
3	In trust store	ISRG Root X1 Self-signed Fingerprint SHA256: 96bcec06264976f37460779acf28c5a7cfe8a3c0aae11a8ffcee05c0bddf08c6 Pin SHA256: C5+lpZ7tcVwmwQIMcRtPbsQtWLABXhQzejna0wHFr8M= RSA 4096 bits (e 65537) / SHA256withRSA
Path #1: Trusted
1	Sent by server	twitter.com Fingerprint SHA256: da16c195418c6e2e2efae40507803df174359a7918a972435c66fd97e1d728e5 Pin SHA256: SFFj5MAi0PYjhIhBSPVX9zVgJvyhOqKysesparM++xc= RSA 2048 bits (e 65537) / SHA256withRSA CRL ERROR: IOException occurred
2	Sent by server	R10 Fingerprint SHA256: 9d7c3f1aa6ad2b2ec0d5cf1e246f8d9ae6cbc9fd0755ad37bb974b1f2fb603f3 Pin SHA256: K7rZOrXHknnsEhUH8nLL4MZkejquUuIvOIr6tCa0rbo= RSA 2048 bits (e 65537) / SHA256withRSA CRL ERROR: IOException occurred
3	In trust store	ISRG Root X1 Self-signed Fingerprint SHA256: 96bcec06264976f37460779acf28c5a7cfe8a3c0aae11a8ffcee05c0bddf08c6 Pin SHA256: C5+lpZ7tcVwmwQIMcRtPbsQtWLABXhQzejna0wHFr8M= RSA 4096 bits (e 65537) / SHA256withRSA
Path #1: Trusted
1	Sent by server	twitter.com Fingerprint SHA256: da16c195418c6e2e2efae40507803df174359a7918a972435c66fd97e1d728e5 Pin SHA256: SFFj5MAi0PYjhIhBSPVX9zVgJvyhOqKysesparM++xc= RSA 2048 bits (e 65537) / SHA256withRSA CRL ERROR: IOException occurred
2	Sent by server	R10 Fingerprint SHA256: 9d7c3f1aa6ad2b2ec0d5cf1e246f8d9ae6cbc9fd0755ad37bb974b1f2fb603f3 Pin SHA256: K7rZOrXHknnsEhUH8nLL4MZkejquUuIvOIr6tCa0rbo= RSA 2048 bits (e 65537) / SHA256withRSA CRL ERROR: IOException occurred
3	In trust store	ISRG Root X1 Self-signed Fingerprint SHA256: 96bcec06264976f37460779acf28c5a7cfe8a3c0aae11a8ffcee05c0bddf08c6 Pin SHA256: C5+lpZ7tcVwmwQIMcRtPbsQtWLABXhQzejna0wHFr8M= RSA 4096 bits (e 65537) / SHA256withRSA

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_AES_256_GCM_SHA384 (`0xc02c`) ECDH x25519 (eq. 3072 bits RSA) FS	256
TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256 (`0xcca9`) ECDH x25519 (eq. 3072 bits RSA) FS	256
TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 (`0xc02f`) ECDH x25519 (eq. 3072 bits RSA) FS	128
TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (`0xc030`) ECDH x25519 (eq. 3072 bits RSA) FS	256
TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256 (`0xcca8`) ECDH x25519 (eq. 3072 bits RSA) FS	256

Handshake Simulation
Android 4.4.2	EC 256 (SHA384)	TLS 1.2	TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 ECDH secp256r1 FS
Android 5.0.0	EC 256 (SHA384)	TLS 1.2	TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 ECDH secp256r1 FS
Android 6.0	EC 256 (SHA384)	TLS 1.2 > http/1.1	TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 ECDH secp256r1 FS
Android 7.0	EC 256 (SHA384)	TLS 1.2 > h2	TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 ECDH x25519 FS
Android 8.0	EC 256 (SHA384)	TLS 1.2 > h2	TLS_ECDHE_ECDSA_WITH_AES_128_GCM_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 (SHA384)	TLS 1.2	TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 ECDH secp256r1 FS
Chrome 49 / XP SP3	RSA 2048 (SHA256)	TLS 1.2 > h2	TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 ECDH secp256r1 FS
Chrome 69 / Win 7 R	EC 256 (SHA384)	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 (SHA384)	TLS 1.2	TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 ECDH secp256r1 FS
Firefox 47 / Win 7 R	EC 256 (SHA384)	TLS 1.2 > h2	TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 ECDH secp256r1 FS
Firefox 49 / XP SP3	EC 256 (SHA384)	TLS 1.2 > h2	TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 ECDH secp256r1 FS
Firefox 62 / Win 7 R	EC 256 (SHA384)	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 (SHA384)	TLS 1.2	TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 ECDH x25519 FS
IE 11 / Win 7 R	EC 256 (SHA384)	TLS 1.2	TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 ECDH secp256r1 FS
IE 11 / Win 8.1 R	EC 256 (SHA384)	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 (SHA384)	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 (SHA384)	TLS 1.2 > http/1.1	TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 ECDH secp256r1 FS
IE 11 / Win 10 R	EC 256 (SHA384)	TLS 1.2 > h2	TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 ECDH secp256r1 FS
Edge 15 / Win 10 R	EC 256 (SHA384)	TLS 1.2 > h2	TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 ECDH x25519 FS
Edge 16 / Win 10 R	EC 256 (SHA384)	TLS 1.2 > h2	TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 ECDH x25519 FS
Edge 18 / Win 10 R	EC 256 (SHA384)	TLS 1.2 > h2	TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 ECDH x25519 FS
Edge 13 / Win Phone 10 R	EC 256 (SHA384)	TLS 1.2 > h2	TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 ECDH secp256r1 FS
Java 8u161	EC 256 (SHA384)	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 (SHA384)	TLS 1.2	TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 ECDH secp256r1 FS
OpenSSL 1.0.2s R	EC 256 (SHA384)	TLS 1.2	TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 ECDH secp256r1 FS
OpenSSL 1.1.0k R	EC 256 (SHA384)	TLS 1.2	TLS_ECDHE_ECDSA_WITH_AES_128_GCM_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	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	EC 256 (SHA384)	TLS 1.2 > h2	TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 ECDH secp256r1 FS
Safari 9 / OS X 10.11 R	EC 256 (SHA384)	TLS 1.2 > h2	TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 ECDH secp256r1 FS
Safari 10 / iOS 10 R	EC 256 (SHA384)	TLS 1.2 > h2	TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 ECDH secp256r1 FS
Safari 10 / OS X 10.12 R	EC 256 (SHA384)	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 (SHA384)	TLS 1.2 > h2	TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 ECDH secp256r1 FS
Yahoo Slurp Jan 2015	EC 256 (SHA384)	TLS 1.2	TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 ECDH secp256r1 FS
YandexBot Jan 2015	EC 256 (SHA384)	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)
GOLDENDOODLE	No (more info)
OpenSSL 0-Length	No (more info)
Sleeping POODLE	No (more info)
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	Yes h2 http/1.1
Session resumption (caching)	No (IDs assigned but not accepted)
Session resumption (tickets)	Yes
OCSP stapling	No
Strict Transport Security (HSTS)	Yes max-age=631138519; includeSubdomains
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, secp384r1, secp521r1 (server preferred order)
SSL 2 handshake compatibility	No
0-RTT enabled	No

HTTP Requests

1 https://twitter.com/ (HTTP/1.1 302 Found)
1
	Date	Sat, 16 Aug 2025 02:17:22 GMT
	Content-Type	text/plain; charset=utf-8
	Transfer-Encoding	chunked
	Connection	close
	Server	cloudflare
	Location	https://x.com/
	CF-Ray	96fd6f592a9a7d59-LAX
	CF-Cache-Status	DYNAMIC
	Cache-Control	no-cache, no-store, must-revalidate, pre-check=0, post-check=0
	Last-Modified	Sat, 16 Aug 2025 02:17:22 GMT
	Set-Cookie	guest_id_marketing=v1%3A175531064214120945; Max-Age=63072000; Expires=Mon, 16 Aug 2027 02:17:22 GMT; Path=/; Domain=.twitter.com; Secure; SameSite=None
	Set-Cookie	guest_id_ads=v1%3A175531064214120945; Max-Age=63072000; Expires=Mon, 16 Aug 2027 02:17:22 GMT; Path=/; Domain=.twitter.com; Secure; SameSite=None
	Set-Cookie	personalization_id="v1_92g9X9SgcvEom1S1bEFM8g=="; Max-Age=63072000; Expires=Mon, 16 Aug 2027 02:17:22 GMT; Path=/; Domain=.twitter.com; Secure; SameSite=None
	Set-Cookie	guest_id=v1%3A175531064214120945; Max-Age=63072000; Expires=Mon, 16 Aug 2027 02:17:22 GMT; Path=/; Domain=.twitter.com; Secure; SameSite=None
	Set-Cookie	ct0=; Max-Age=-1755310641; Expires=Thu, 01 Jan 1970 00:00:01 GMT; Path=/; Domain=.twitter.com; Secure; SameSite=Lax
	Set-Cookie	__cf_bm=gHH8tIDHmus3um3NEccMgoPJa3onqGhRtCqIN1c9vwM-1755310642-1.0.1.1-0gICwDw7oBbHuuvU1CmQn8gQV2f3C.UhDVepK0RGdeh_zn7Yu.Rx.1EGHEdacLnag.vc6Z63Q0Ctvc7nPZdpcYEY3jIW5t6sRMVYxkgPZH8; path=/; expires=Sat, 16-Aug-25 02:47:22 GMT; domain=.twitter.com; HttpOnly; Secure; SameSite=None
	Strict-Transport-Security	max-age=631138519; includeSubdomains
	Vary	Accept, accept-encoding
	Pragma	no-cache
	content-security-policy	connect-src 'self' blob: https://fonts.googleapis.com/css https://mapsresources-pa.googleapis.com https://maps.googleapis.com https://www.gstatic.com/maps/ https://.pscp.tv https://.twimg.com https://.video.pscp.tv https://aa.twitter.com https://aa.x.com https://accounts.google.com/gsi/ https://ads-api.twitter.com https://ads-api.x.com https://api-stream.twitter.com https://api-stream.x.com https://api.twitter.com https://api.x.ai https://api.x.com https://api.x.com https://caps.twitter.com https://caps.x.com https://grok.x.com https://jf.twitter.com https://jf.x.com https://jf-t.x.com https://pay.twitter.com https://pay.x.com https://sentry.io https://ton-staging.atla.twitter.com https://ton-staging.atla.x.com https://ton-staging.pdxa.twitter.com https://ton-staging.pdxa.x.com https://ton.twitter.com https://ton.x.com https://twitter.com https://upload.twitter.com https://upload.x.com https://www.google-analytics.com https://x.com https://grok-api.gcp.mouseion.dev https://assets.mouseion.dev https://grok.com https://assets.grok.com https://.adtrafficquality.google https://.googlesyndication.com https://.doubleclick.net https://adservice.google.com https://www.googleadservices.com https://pagead2.googlesyndication.com https://www.google.com https://google.com https://via.intercom.io https://api.intercom.io https://api.au.intercom.io https://api.eu.intercom.io https://api-iam.intercom.io https://api-iam.eu.intercom.io https://api-iam.au.intercom.io https://api-ping.intercom.io https://nexus-websocket-a.intercom.io wss://nexus-websocket-a.intercom.io https://nexus-websocket-b.intercom.io wss://nexus-websocket-b.intercom.io https://nexus-europe-websocket.intercom.io wss://nexus-europe-websocket.intercom.io https://nexus-australia-websocket.intercom.io wss://nexus-australia-websocket.intercom.io https://uploads.intercomcdn.com https://uploads.intercomcdn.eu https://uploads.au.intercomcdn.com https://uploads.eu.intercomcdn.com https://uploads.intercomusercontent.com https://production.plaid.com/ https://sandbox.plaid.com/ https://ingestion.dv.socure.io https://network.dv.socure.io/ https://analytics.dv.socure.io/ https://payments-dev.x.com/customer/wasm/forward-with-v1.wasm https://payments-staging.x.com/customer/wasm/forward-with-v1.wasm https://payments-prod.x.com/customer/wasm/forward-with-v1.wasm https://money-dev.x.com/customer/wasm/forward-with-v1.wasm https://money-staging.x.com/customer/wasm/forward-with-v1.wasm https://money.x.com/customer/wasm/forward-with-v1.wasm https://api.stripe.com https://m.castle.io https://checkoutshopper-live.adyen.com wss://.pscp.tv https://vmap.snappytv.com https://vmapstage.snappytv.com https://vmaprel.snappytv.com https://vmap.grabyo.com https://dhdsnappytv-vh.akamaihd.net https://pdhdsnappytv-vh.akamaihd.net https://mdhdsnappytv-vh.akamaihd.net https://mdhdsnappytv-vh.akamaihd.net https://mpdhdsnappytv-vh.akamaihd.net https://mmdhdsnappytv-vh.akamaihd.net https://mdhdsnappytv-vh.akamaihd.net https://mpdhdsnappytv-vh.akamaihd.net https://mmdhdsnappytv-vh.akamaihd.net https://dwo3ckksxlb0v.cloudfront.net https://media.riffsy.com https://.giphy.com https://media.tenor.com https://c.tenor.com wss://chat-ws.x.com wss://chat-ws.dev.cftls.t.co https://d1muhwhmpsz4u8.cloudfront.net/ https://d2bchqfeno8n2m.cloudfront.net/ https://d2shtph9y6bxk.cloudfront.net/ https://xchat-hsm-staging.x.com/ https://realm-a.x.com https://realm-b.x.com https://realm-west1.x.com https://realm-east1.x.com https://hsm-staging.x.com https://ads-twitter.com https://analytics.twitter.com https://analytics.x.com ; default-src 'self'; form-action 'self' https://twitter.com https://.twitter.com https://x.com https://.x.com https://localhost.twitter.com:3443 https://localhost.x.com:3443 https://intercom.help https://api-iam.intercom.io https://api-iam.eu.intercom.io https://api-iam.au.intercom.io; font-src 'self' https://.twimg.com https://js.intercomcdn.com https://fonts.intercomcdn.com; frame-src 'self' https://accounts.google.com/ https://accounts.google.com/gsi/ https://cards-frame.twitter.com https://cdn.plaid.com/ https://client-api.arkoselabs.com/ https://content.googleapis.com/ https://iframe.arkoselabs.com/ https://mobile.twitter.com https://mobile.x.com https://pay.twitter.com https://pay.x.com https://google.com https://www.google.com https://intercom-sheets.com https://www.intercom-reporting.com https://www.youtube.com https://player.vimeo.com https://fast.wistia.net https://console.googletagservices.com https://.doubleclick.net https://.adtrafficquality.google https://.safeframe.googlesyndication.com https://www.googleadservices.com https://googleadservices.com https://adservice.google.com https://.googlesyndication.com https://td.doubleclick.net https://payments-dev.x.com/ https://payments-staging.x.com/ https://payments-prod.x.com/ https://sdn.payments-dev.x.com/ https://sdn.payments-staging.x.com/ https://sdn.payments-prod.x.com/ https://money-dev.x.com/ https://money-staging.x.com/ https://money.x.com/ https://sdn.money-dev.x.com/ https://sdn.money-staging.x.com/ https://sdn.money.x.com/ https://p2pcreditcardiframesandbox.crbcos.com https://p2pcreditcardiframe.crbcos.com https://verify-sandbox.plaid.com/ https://.js.stripe.com https://js.stripe.com https://hooks.stripe.com https://cdn.getpinwheel.com/ https://artifacts.grokusercontent.com https://twitter.com https://x.com https://recaptcha.net/recaptcha/; img-src 'self' blob: data: https://www.google.com/maps/place/ https://imgs.search.brave.com https://.cdn.twitter.com https://.cdn.x.com https://ton.twitter.com https://ton.x.com https://.twimg.com https://analytics.twitter.com https://analytics.x.com https://cm.g.doubleclick.net https://www.google-analytics.com https://maps.googleapis.com https://www.periscope.tv https://www.pscp.tv https://ads-twitter.com https://ads-api.twitter.com https://ads-api.x.com https://api.x.com https://developer.x.com blob: data: https://js.intercomcdn.com https://static.intercomassets.com https://downloads.intercomcdn.com https://downloads.intercomcdn.eu https://downloads.au.intercomcdn.com https://uploads.intercomusercontent.com https://gifs.intercomcdn.com https://video-messages.intercomcdn.com https://messenger-apps.intercom.io https://messenger-apps.eu.intercom.io https://messenger-apps.au.intercom.io https://.intercom-attachments-1.com https://.intercom-attachments.eu https://.au.intercom-attachments.com https://.intercom-attachments-2.com https://.intercom-attachments-3.com https://.intercom-attachments-4.com https://.intercom-attachments-5.com https://.intercom-attachments-6.com https://.intercom-attachments-7.com https://.intercom-attachments-8.com https://.intercom-attachments-9.com https://static.intercomassets.eu https://static.au.intercomassets.com https://media.riffsy.com https://.giphy.com https://media.tenor.com https://c.tenor.com https://.pscp.tv https://.periscope.tv https://prod-periscope-profile.s3-us-west-2.amazonaws.com https://platform-lookaside.fbsbx.com https://scontent.xx.fbcdn.net https://scontent-sea1-1.xx.fbcdn.net https://.googleusercontent.com https://t.co/1/i/adsct https://.googleusercontent.com https://.gstatic.com https://.googlesyndication.com https://.adtrafficquality.google https://www.google.com/ads/measurement/ https://.google.com/ads/measurement/ https://googleads.g.doubleclick.net https://google.com https://www.google.com https://plaid-merchant-logos.plaid.com https://plaid-counterparty-logos.plaid.com https://assets.mouseion.dev https://assets.grok.com; manifest-src 'self'; media-src 'self' data: blob: https://twitter.com https://x.com https://.twimg.com https://.vine.co https://.pscp.tv https://.video.pscp.tv https://js.intercomcdn.com https://downloads.intercomcdn.com https://downloads.intercomcdn.eu https://downloads.au.intercomcdn.com https://dhdsnappytv-vh.akamaihd.net https://pdhdsnappytv-vh.akamaihd.net https://mdhdsnappytv-vh.akamaihd.net https://mdhdsnappytv-vh.akamaihd.net https://mpdhdsnappytv-vh.akamaihd.net https://mmdhdsnappytv-vh.akamaihd.net https://mdhdsnappytv-vh.akamaihd.net https://mpdhdsnappytv-vh.akamaihd.net https://mmdhdsnappytv-vh.akamaihd.net https://dwo3ckksxlb0v.cloudfront.net; object-src 'none'; script-src 'self' 'unsafe-inline' https://maps.googleapis.com https://.twimg.com https://recaptcha.net/recaptcha/ http://www.gstatic.com/cast/sdk/libs/caf_receiver/v3/cast_receiver_framework.js https://accounts.google.com/gsi/client https://apis.google.com/js/api.js https://appleid.cdn-apple.com/appleauth/static/jsapi/appleid/1/en_US/appleid.auth.js https://client-api.arkoselabs.com/ https://static.ads-twitter.com https://twitter.com https://www.google-analytics.com https://www.gstatic.com/cast/sdk/libs/caf_receiver/v3/cast_receiver_framework.js https://x.com https://sdn.payments-dev.x.com/assets/loader.min.js https://sdn.payments-staging.x.com/assets/loader.min.js https://sdn.payments-prod.x.com/assets/loader.min.js https://sdn.money-dev.x.com/assets/loader.min.js https://sdn.money-staging.x.com/assets/loader.min.js https://sdn.money.x.com/assets/loader.min.js https://sdk.dv.socure.io/latest/device-risk-sdk.js https://cdn.plaid.com/link/v2/stable/link-initialize.js https://payments-dev.x.com/customer/wasm/xxp-forward-with-sdk.js https://payments-staging.x.com/customer/wasm/xxp-forward-with-sdk.js https://payments-prod.x.com/customer/wasm/xxp-forward-with-sdk.js https://money-dev.x.com/customer/wasm/xxp-forward-with-sdk.js https://money-staging.x.com/customer/wasm/xxp-forward-with-sdk.js https://money.x.com/customer/wasm/xxp-forward-with-sdk.js https://js.stripe.com https://.js.stripe.com https://cdn.getpinwheel.com/pinwheel-v3.1.0.js https://securepubads.g.doubleclick.net https://www.googletagservices.com https://.googletagservices.com https://pagead2.googlesyndication.com https://adservice.google.com https://www.googleadservices.com https://ads.google.com https://tpc.googlesyndication.com https://.tpc.googlesyndication.com https://www.google.com https://googleads.g.doubleclick.net https://app.intercom.io https://widget.intercom.io https://js.intercomcdn.com 'wasm-unsafe-eval' 'nonce-OTBjOWM4N2MtZWNmOC00MjY0LTkzOTgtMjJhZDI1MGMzMWUw'; style-src 'self' 'unsafe-inline' https://accounts.google.com/gsi/style https://.twimg.com; worker-src 'self' blob:; report-uri https://x.com/i/csp_report?a=O5RXE%3D%3D%3D&ro=false
	cross-origin-embedder-policy	unsafe-none
	cross-origin-opener-policy	unsafe-none
	expiry	Tue, 31 Mar 1981 05:00:00 GMT
	perf	7402827104
	reporting-endpoints	coep-report="https://twitter.com/i/coep-report", coop-report="https://twitter.com/i/coop-report"
	x-connection-hash	fb30ac6b0e1aaf30e7a1662018d9e7e05bf1aa6fde563b1550c2d885d3f64d6d
	x-content-type-options	nosniff
	x-frame-options	DENY
	x-powered-by	Express
	x-response-time	11
	x-transaction-id	de21b33ab9b84fe9
	x-xss-protection	0

Miscellaneous
Test date	Sat, 16 Aug 2025 02:17:14 UTC
Test duration	47.274 seconds
HTTP status code	302
HTTP forwarding	https://x.com
HTTP server signature	cloudflare
Server hostname	-

SSL Report v2.4.1

Copyright © 2009-2025 Qualys, Inc. All Rights Reserved. Privacy Policy.	Terms and Conditions
Try Qualys for free! Experience the award-winning Qualys Cloud Platform and the entire collection of Qualys Cloud Apps, including certificate security solutions.