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  2. Online Certificate Status Protocol - Wikipedia

    en.wikipedia.org/wiki/Online_Certificate_Status...

    RFC 8954: OCSP Nonce Extension. The Online Certificate Status Protocol ( OCSP) is an Internet protocol used for obtaining the revocation status of an X.509 digital certificate. [2] It is described in RFC 6960 and is on the Internet standards track. It was created as an alternative to certificate revocation lists (CRL), specifically addressing ...

  3. OCSP stapling - Wikipedia

    en.wikipedia.org/wiki/OCSP_stapling

    The Online Certificate Status Protocol (OCSP) stapling, formally known as the TLS Certificate Status Request extension, is a standard for checking the revocation status of X.509 digital certificates. [1] It allows the presenter of a certificate to bear the resource cost involved in providing Online Certificate Status Protocol (OCSP) responses ...

  4. Transport Layer Security - Wikipedia

    en.wikipedia.org/wiki/Transport_Layer_Security

    Transport Layer Security ( TLS) is a cryptographic protocol designed to provide communications security over a computer network. The protocol is widely used in applications such as email, instant messaging, and voice over IP, but its use in securing HTTPS remains the most publicly visible. The TLS protocol aims primarily to provide security ...

  5. Fix security certificate error messages in ... - AOL Help

    help.aol.com/articles/message-the-security...

    Get live expert help with your AOL needs—from email and passwords, technical questions, mobile email and more. Call Live AOL Support at 1-800-358-4860 Feedback

  6. Heartbleed - Wikipedia

    en.wikipedia.org/wiki/Heartbleed

    Heartbleed is a security bug in some outdated versions of the OpenSSL cryptography library, which is a widely used implementation of the Transport Layer Security (TLS) protocol. It was introduced into the software in 2012 and publicly disclosed in April 2014. Heartbleed could be exploited regardless of whether the vulnerable OpenSSL instance is ...

  7. Server Name Indication - Wikipedia

    en.wikipedia.org/wiki/Server_Name_Indication

    Server Name Indication. Server Name Indication ( SNI) is an extension to the Transport Layer Security (TLS) computer networking protocol by which a client indicates which hostname it is attempting to connect to at the start of the handshaking process. [1] The extension allows a server to present one of multiple possible certificates on the same ...

  8. HTTPS - Wikipedia

    https://en.wikipedia.org/wiki/HTTPS

    SSL/TLS does not prevent the indexing of the site by a web crawler, and in some cases the URI of the encrypted resource can be inferred by knowing only the intercepted request/response size. This allows an attacker to have access to the plaintext (the publicly available static content), and the encrypted text (the encrypted version of the ...

  9. Certificate Transparency - Wikipedia

    en.wikipedia.org/wiki/Certificate_Transparency

    Certificate Transparency. Certificate Transparency ( CT) is an Internet security standard for monitoring and auditing the issuance of digital certificates. [1] The security of HTTPS depends on the trust that certificates are only given out by the certificate authority that was requested by the owner of some website or IT infrastructure.

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