Summary of xtr.tos.sktelecom.com:443 (HTTPS) SSL Security Test
Provided "as is" without any warranty of any kind.
This test was made 38 days ago and may be outdated
Refresh Test
Date/Time:Oct 2nd, 2026 10:25 GMT+0
Source IP/Port:203.236.20.160:443
Protocol:HTTPS
Location:Seoul, South Korea
Your final score:
- A
- B
- C
- F
B-
The server has TLS 1.0 enabled. It is non-compliant with NIST since SP 800-52 REV. 2 and non-compliant with PCI DSS since the 30th of June 2018.
Non-compliant with PCI DSS and NIST
The server has TLS 1.1 enabled. It is non-compliant with NIST since SP 800-52 REV. 2 and non-compliant with PCI DSS since the 31st of March 2025.
Non-compliant with PCI DSS and NIST
Test Results Summary for xtr.tos.sktelecom.com
- The server on the tested port is currently not prepared for post-quantum key exchange. The server’s certificate chain relies entirely on classical signature algorithms without post-quantum support. Show details.
- 1 SSL/TLS end-entity certificate detected: the first certificate is a trusted RSA 2048 bits certificate with issuer Sectigo Public Server Authentication CA OV R36 valid until January 30, 2027. 2 certificate chains detected. Show details.
- 13 of 31 supported cipher suites are not compliant with PCI DSS. The server supports PCI DSS compliant protocols (TLSv1.2) as well as non-compliant protocols (TLSv1.0 and TLSv1.1). All supported elliptic curves are compliant with PCI DSS: P-256, P-521 and P-384. There is 1 more issue which makes the server non-compliant with PCI DSS: potential Marvin Attack. Show details.
- 17 of 31 supported cipher suites are not compliant with HIPAA requirements (Ref. NIST SP 800-52). The server supports HIPAA compliant protocols (TLSv1.2) as well as non-compliant protocols (TLSv1.0 and TLSv1.1). All supported elliptic curves are compliant with HIPAA: P-256, P-521 and P-384. There are 3 more issues which make the server non-compliant with HIPAA: server does not support OCSP stapling, server does not support TLS 1.3, server does not support extended master sECret. Show details.
- 2 issues related to industry best practices were identified: server does not support TLS 1.3, server does not provide HSTS. Show details.
Compliance Summary for xtr.tos.sktelecom.com
- PCI DSS Compliance Failed: 13 of 31 supported cipher suites are not compliant with PCI DSS. The server supports PCI DSS compliant protocols (TLSv1.2) as well as non-compliant protocols (TLSv1.0 and TLSv1.1). All supported elliptic curves are compliant with PCI DSS: P-256, P-521 and P-384. There is 1 more issue which makes the server non-compliant with PCI DSS: potential Marvin Attack.
- HIPAA Compliance Failed: 17 of 31 supported cipher suites are not compliant with HIPAA requirements (Ref. NIST SP 800-52). The server supports HIPAA compliant protocols (TLSv1.2) as well as non-compliant protocols (TLSv1.0 and TLSv1.1). All supported elliptic curves are compliant with HIPAA: P-256, P-521 and P-384. There are 3 more issues which make the server non-compliant with HIPAA: server does not support OCSP stapling, server does not support TLS 1.3, server does not support extended master sECret.
- GDPR Compliance Failed: 13 of 31 supported cipher suites are not compliant with GDPR. The server supports GDPR compliant protocols (TLSv1.2) as well as non-compliant protocols (TLSv1.0 and TLSv1.1). All supported elliptic curves are compliant with GDPR: P-256, P-521 and P-384. There is 1 more issue which makes the server non-compliant with GDPR: potential Marvin Attack.
