SSL Report: vca-int.mercedes-benz.com (141.113.227.186)
Assessed on:  Thu, 22 May 2025 16:00:24 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
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 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: RSA 2048 bits (SHA256withRSA)
Server Key and Certificate #1
Subject vca-int.mercedes-benz.com
Fingerprint SHA256: 72cb14df9ad2e905615b8eb713b974cfb1f93a971c7e624fb376cfc5b22cb5be
Pin SHA256: yGNvauW+2eTDDhOqR5pkkCfVAuEzHpI4n1yCl9QjJ2Q=
Common names vca-int.mercedes-benz.com
Alternative names vca-int.mercedes-benz.com vca-int-mercedes-benz-com.corpshared.net vca-int-mercedes-benz-com.gal-int.g.corpinter.net
Serial Number 07ab885c3596092b4cbea97c8b80c436
Valid from Wed, 30 Apr 2025 00:00:00 UTC
Valid until Wed, 29 Apr 2026 23:59:59 UTC (expires in 11 months and 6 days)
Key RSA 2048 bits (e 65537)
Weak key (Debian) No
Issuer DigiCert QuoVadis 2G3 TLS RSA4096 SHA384 2023 CA1
AIA: http://cacerts.digicert.eu/DigiCertQuoVadis2G3TLSRSA4096SHA3842023CA1.crt
Signature algorithm SHA256withRSA
Extended Validation No
Certificate Transparency Yes (certificate)
OCSP Must Staple No
Revocation information CRL, OCSP
CRL: http://crl.digicert.eu/DigiCertQuoVadis2G3TLSRSA4096SHA3842023CA1.crl
OCSP: http://ocsp.digicert.eu
Revocation status Good (not revoked)
DNS CAA No (more info)
Trusted Yes
Mozilla  Apple  Android  Java  Windows 


Additional Certificates (if supplied)
Certificates provided 3 (5126 bytes)
Chain issues Contains anchor
#2
Subject DigiCert QuoVadis 2G3 TLS RSA4096 SHA384 2023 CA1
Fingerprint SHA256: 9163f1910d4944be32d0d224a79f9fa6b4036e9098795ac81d3dd14ce4ff24d2
Pin SHA256: ZPyxn3oNKP1K/sTUV8OfjfYB2niVatmowpkxgfZdTVA=
Valid until Sun, 11 Dec 2033 23:59:59 UTC (expires in 8 years and 6 months)
Key RSA 4096 bits (e 65537)
Issuer QuoVadis Root CA 2 G3
Signature algorithm SHA384withRSA
#3
Subject QuoVadis Root CA 2 G3   In trust store
Fingerprint SHA256: 8fe4fb0af93a4d0d67db0bebb23e37c71bf325dcbcdd240ea04daf58b47e1840
Pin SHA256: SkntvS+PgjC9VZKzE1c/4cFypF+pgBHMHt27Nq3j/OU=
Valid until Sun, 12 Jan 2042 18:59:32 UTC (expires in 16 years and 7 months)
Key RSA 4096 bits (e 65537)
Issuer QuoVadis Root CA 2 G3   Self-signed
Signature algorithm SHA256withRSA


Certification Paths
Path #1: Trusted
1 Sent by server vca-int.mercedes-benz.com
Fingerprint SHA256: 72cb14df9ad2e905615b8eb713b974cfb1f93a971c7e624fb376cfc5b22cb5be
Pin SHA256: yGNvauW+2eTDDhOqR5pkkCfVAuEzHpI4n1yCl9QjJ2Q=

RSA 2048 bits (e 65537) / SHA256withRSA
2 Sent by server DigiCert QuoVadis 2G3 TLS RSA4096 SHA384 2023 CA1
Fingerprint SHA256: 9163f1910d4944be32d0d224a79f9fa6b4036e9098795ac81d3dd14ce4ff24d2
Pin SHA256: ZPyxn3oNKP1K/sTUV8OfjfYB2niVatmowpkxgfZdTVA=

RSA 4096 bits (e 65537) / SHA384withRSA
3 Sent by server
In trust store
QuoVadis Root CA 2 G3   Self-signed
Fingerprint SHA256: 8fe4fb0af93a4d0d67db0bebb23e37c71bf325dcbcdd240ea04daf58b47e1840
Pin SHA256: SkntvS+PgjC9VZKzE1c/4cFypF+pgBHMHt27Nq3j/OU=

RSA 4096 bits (e 65537) / SHA256withRSA
Path #1: Trusted
1 Sent by server vca-int.mercedes-benz.com
Fingerprint SHA256: 72cb14df9ad2e905615b8eb713b974cfb1f93a971c7e624fb376cfc5b22cb5be
Pin SHA256: yGNvauW+2eTDDhOqR5pkkCfVAuEzHpI4n1yCl9QjJ2Q=

RSA 2048 bits (e 65537) / SHA256withRSA
2 Sent by server DigiCert QuoVadis 2G3 TLS RSA4096 SHA384 2023 CA1
Fingerprint SHA256: 9163f1910d4944be32d0d224a79f9fa6b4036e9098795ac81d3dd14ce4ff24d2
Pin SHA256: ZPyxn3oNKP1K/sTUV8OfjfYB2niVatmowpkxgfZdTVA=

RSA 4096 bits (e 65537) / SHA384withRSA
3 Sent by server
In trust store
QuoVadis Root CA 2 G3   Self-signed
Fingerprint SHA256: 8fe4fb0af93a4d0d67db0bebb23e37c71bf325dcbcdd240ea04daf58b47e1840
Pin SHA256: SkntvS+PgjC9VZKzE1c/4cFypF+pgBHMHt27Nq3j/OU=

RSA 4096 bits (e 65537) / SHA256withRSA
Path #1: Trusted
1 Sent by server vca-int.mercedes-benz.com
Fingerprint SHA256: 72cb14df9ad2e905615b8eb713b974cfb1f93a971c7e624fb376cfc5b22cb5be
Pin SHA256: yGNvauW+2eTDDhOqR5pkkCfVAuEzHpI4n1yCl9QjJ2Q=

RSA 2048 bits (e 65537) / SHA256withRSA
2 Sent by server DigiCert QuoVadis 2G3 TLS RSA4096 SHA384 2023 CA1
Fingerprint SHA256: 9163f1910d4944be32d0d224a79f9fa6b4036e9098795ac81d3dd14ce4ff24d2
Pin SHA256: ZPyxn3oNKP1K/sTUV8OfjfYB2niVatmowpkxgfZdTVA=

RSA 4096 bits (e 65537) / SHA384withRSA
3 Sent by server
In trust store
QuoVadis Root CA 2 G3   Self-signed
Fingerprint SHA256: 8fe4fb0af93a4d0d67db0bebb23e37c71bf325dcbcdd240ea04daf58b47e1840
Pin SHA256: SkntvS+PgjC9VZKzE1c/4cFypF+pgBHMHt27Nq3j/OU=

RSA 4096 bits (e 65537) / SHA256withRSA
Path #1: Trusted
1 Sent by server vca-int.mercedes-benz.com
Fingerprint SHA256: 72cb14df9ad2e905615b8eb713b974cfb1f93a971c7e624fb376cfc5b22cb5be
Pin SHA256: yGNvauW+2eTDDhOqR5pkkCfVAuEzHpI4n1yCl9QjJ2Q=

RSA 2048 bits (e 65537) / SHA256withRSA
2 Sent by server DigiCert QuoVadis 2G3 TLS RSA4096 SHA384 2023 CA1
Fingerprint SHA256: 9163f1910d4944be32d0d224a79f9fa6b4036e9098795ac81d3dd14ce4ff24d2
Pin SHA256: ZPyxn3oNKP1K/sTUV8OfjfYB2niVatmowpkxgfZdTVA=

RSA 4096 bits (e 65537) / SHA384withRSA
3 Sent by server
In trust store
QuoVadis Root CA 2 G3   Self-signed
Fingerprint SHA256: 8fe4fb0af93a4d0d67db0bebb23e37c71bf325dcbcdd240ea04daf58b47e1840
Pin SHA256: SkntvS+PgjC9VZKzE1c/4cFypF+pgBHMHt27Nq3j/OU=

RSA 4096 bits (e 65537) / SHA256withRSA
Path #1: Trusted
1 Sent by server vca-int.mercedes-benz.com
Fingerprint SHA256: 72cb14df9ad2e905615b8eb713b974cfb1f93a971c7e624fb376cfc5b22cb5be
Pin SHA256: yGNvauW+2eTDDhOqR5pkkCfVAuEzHpI4n1yCl9QjJ2Q=

RSA 2048 bits (e 65537) / SHA256withRSA
2 Sent by server DigiCert QuoVadis 2G3 TLS RSA4096 SHA384 2023 CA1
Fingerprint SHA256: 9163f1910d4944be32d0d224a79f9fa6b4036e9098795ac81d3dd14ce4ff24d2
Pin SHA256: ZPyxn3oNKP1K/sTUV8OfjfYB2niVatmowpkxgfZdTVA=

RSA 4096 bits (e 65537) / SHA384withRSA
3 Sent by server
In trust store
QuoVadis Root CA 2 G3   Self-signed
Fingerprint SHA256: 8fe4fb0af93a4d0d67db0bebb23e37c71bf325dcbcdd240ea04daf58b47e1840
Pin SHA256: SkntvS+PgjC9VZKzE1c/4cFypF+pgBHMHt27Nq3j/OU=

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 (suites in server-preferred order)
TLS_AES_256_GCM_SHA384 (0x1302)   ECDH secp256r1 (eq. 3072 bits RSA)   FS 256
TLS_CHACHA20_POLY1305_SHA256 (0x1303)   ECDH secp256r1 (eq. 3072 bits RSA)   FS 256
TLS_AES_128_GCM_SHA256 (0x1301)   ECDH secp256r1 (eq. 3072 bits RSA)   FS 128
# TLS 1.2 (we could not determine if the server has a preference)
TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (0xc030)   ECDH secp256r1 (eq. 3072 bits RSA)   FS 256


Handshake Simulation
Android 4.4.2 RSA 2048 (SHA256)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH secp256r1  FS
Android 5.0.0 Server sent fatal alert: handshake_failure
Android 6.0 Server sent fatal alert: handshake_failure
Android 7.0 Protocol or cipher suite mismatch
TLS 1.2 > http/1.1    |  TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
Android 8.0 Protocol or cipher suite mismatch
TLS 1.2 > http/1.1    |  TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
Android 8.1 -   TLS 1.3 TLS_AES_256_GCM_SHA384   ECDH secp256r1  FS
Android 9.0 -   TLS 1.3 TLS_AES_256_GCM_SHA384   ECDH secp256r1  FS
BingPreview Jan 2015 RSA 2048 (SHA256)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH secp256r1  FS
Chrome 49 / XP SP3 Server sent fatal alert: handshake_failure
Chrome 69 / Win 7  R Protocol or cipher suite mismatch
TLS 1.2 > http/1.1    |  TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
Chrome 70 / Win 10 -   TLS 1.3 TLS_AES_256_GCM_SHA384   ECDH secp256r1  FS
Chrome 80 / Win 10  R -   TLS 1.3 TLS_AES_256_GCM_SHA384   ECDH secp256r1  FS
Firefox 31.3.0 ESR / Win 7 Server sent fatal alert: handshake_failure
Firefox 47 / Win 7  R Server sent fatal alert: handshake_failure
Firefox 49 / XP SP3 Protocol or cipher suite mismatch
TLS 1.2 > http/1.1    |  TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
Firefox 62 / Win 7  R Protocol or cipher suite mismatch
TLS 1.2 > http/1.1    |  TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
Firefox 73 / Win 10  R -   TLS 1.3 TLS_AES_256_GCM_SHA384   ECDH secp256r1  FS
Googlebot Feb 2018 Protocol or cipher suite mismatch
TLS 1.2  |  TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
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 Protocol or cipher suite mismatch
TLS 1.2 > http/1.1    |  TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
Edge 15 / Win 10  R Protocol or cipher suite mismatch
TLS 1.2 > http/1.1    |  TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
Edge 16 / Win 10  R Protocol or cipher suite mismatch
TLS 1.2 > http/1.1    |  TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
Edge 18 / Win 10  R Protocol or cipher suite mismatch
TLS 1.2 > http/1.1    |  TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
Edge 13 / Win Phone 10  R Protocol or cipher suite mismatch
TLS 1.2 > http/1.1    |  TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
Java 8u161 RSA 2048 (SHA256)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH secp256r1  FS
Java 11.0.3 -   TLS 1.3 TLS_AES_256_GCM_SHA384   ECDH secp256r1  FS
Java 12.0.1 -   TLS 1.3 TLS_AES_256_GCM_SHA384   ECDH secp256r1  FS
OpenSSL 1.0.1l  R Protocol or cipher suite mismatch
TLS 1.2  |  TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
OpenSSL 1.0.2s  R RSA 2048 (SHA256)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH secp256r1  FS
OpenSSL 1.1.0k  R RSA 2048 (SHA256)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH secp256r1  FS
OpenSSL 1.1.1c  R -   TLS 1.3 TLS_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 Protocol or cipher suite mismatch
TLS 1.2 > http/1.1    |  TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
Safari 9 / OS X 10.11  R RSA 2048 (SHA256)   TLS 1.2 > http/1.1   TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH secp256r1  FS
Safari 10 / iOS 10  R Protocol or cipher suite mismatch
TLS 1.2 > http/1.1    |  TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
Safari 10 / OS X 10.12  R Protocol or cipher suite mismatch
TLS 1.2 > http/1.1    |  TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
Safari 12.1.2 / MacOS 10.14.6 Beta  R -   TLS 1.3 TLS_AES_256_GCM_SHA384   ECDH secp256r1  FS
Safari 12.1.1 / iOS 12.3.1  R -   TLS 1.3 TLS_AES_256_GCM_SHA384   ECDH secp256r1  FS
Apple ATS 9 / iOS 9  R RSA 2048 (SHA256)   TLS 1.2 > http/1.1   TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH secp256r1  FS
Yahoo Slurp Jan 2015 RSA 2048 (SHA256)   TLS 1.2 TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   ECDH secp256r1  FS
YandexBot Jan 2015 RSA 2048 (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 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   http/1.1
NPN No
Session resumption (caching) Yes
Session resumption (tickets) No
OCSP stapling No   INTOLERANT
Strict Transport Security (HSTS) Yes
max-age=157680000
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, secp384r1, secp224r1, secp521r1 (server preferred order)
SSL 2 handshake compatibility No
0-RTT enabled No


HTTP Requests
1 https://vca-int.mercedes-benz.com/  (HTTP/1.1 302 Object Moved)
1
Location /logon/LogonPoint/tmindex.html
Strict-Transport-Security max-age=157680000
Set-Cookie NSC_DLGE=xyz;Path=/;expires=Wednesday, 09-Nov-1999 23:12:40 GMT;Secure
Set-Cookie NSC_USER=xyz;Path=/;expires=Wednesday, 09-Nov-1999 23:12:40 GMT;Secure
Set-Cookie NSC_CERT=xyz;Path=/;expires=Wednesday, 09-Nov-1999 23:12:40 GMT;Secure
Set-Cookie NSC_TEMP=xyz;Path=/;expires=Wednesday, 09-Nov-1999 23:12:40 GMT;Secure
Set-Cookie NSC_PERS=xyz;Path=/;expires=Wednesday, 09-Nov-1999 23:12:40 GMT;Secure
Set-Cookie NSC_TEMP=xyz;Path=/;expires=Wednesday, 09-Nov-1999 23:12:40 GMT
Set-Cookie NSC_PERS=xyz;Path=/;expires=Wednesday, 09-Nov-1999 23:12:40 GMT
X-Content-Type-Options nosniff
X-XSS-Protection 1; mode=block
Connection close
Content-Length 413
Cache-control no-cache, no-store, must-revalidate
Pragma no-cache
Content-Type text/html; charset=utf-8
2 https://vca-int.mercedes-benz.com/logon/LogonPoint/tmindex.html  (HTTP/1.1 200 OK)
2
Age 21
Date Thu, 22 May 2025 15:57:05 GMT
Cache-Control no-cache,no-store,must-revalidate
Connection Keep-Alive
Via NS-CACHE-10.0: 39
ETag "a717-63591aa250c9a"
X-Frame-Options SAMEORIGIN
Last-Modified Tue, 20 May 2025 14:00:01 GMT
Accept-Ranges bytes
Content-Length 42775
Feature-Policy camera 'none'; microphone 'none'; geolocation 'none'
Referrer-Policy no-referrer
X-Content-Type-Options nosniff
Content-Type text/html; charset=utf-8
Permissions-Policy geolocation=() camera=(), microphone=()
X-Permitted-Cross-Domain-Policies none
X-Download-Options noopen
Clear-Site-Data : cache, cookies, storage
Content-Security-Policy default-src 'self'; script-src 'self' 'https://vca.mercedes-benz.com' 'https://vca-int.mercedes-benz.com' 'unsafe-inline' 'unsafe-eval'; connect-src 'self'; img-src http://localhost:* 'self' data: http: https: 'https://vca.mercedes-benz.com' 'https://vca-int.mercedes-benz.com'; style-src 'self' 'unsafe-inline'; font-src 'self'; frame-src 'self' com.citrix.agmacepa://* receiver://* citrixng://* com.citrix.nsgclient://* vmware-view:// nsgcepa://* application://* 'self'; child-src 'self' com.citrix.agmacepa://* citrixng://* com.citrix.nsgclient://* receiver://* vmware-view:// nsgcepa://nsgcepa application://*; form-action 'self' https: 'https://vca.mercedes-benz.com' 'https://vca-int.mercedes-benz.com' 'https://sso.mercedes-benz.com/idp/SSO.saml2' 'https://sso-int.mercedes-benz.com/idp/SSO.saml2' 'https://login.mercedes-benz.com' 'https://login-int.mercedes-benz.com'; object-src 'self'; report-uri /nscsp_violation/report_uri
Strict-Transport-Security max-age=157680000


Miscellaneous
Test date Thu, 22 May 2025 15:56:53 UTC
Test duration 211.8 seconds
HTTP status code 200
HTTP server signature -
Server hostname -


SSL Report v2.4.0