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  2. DNS Certification Authority Authorization - Wikipedia

    en.wikipedia.org/wiki/DNS_Certification...

    Jacob Hoffman-Andrews. DNS Certification Authority Authorization (CAA) is an Internet security policy mechanism that allows domain name holders to indicate to certificate authorities whether they are authorized to issue digital certificates for a particular domain name. It does this by means of a "CAA" Domain Name System (DNS) resource record.

  3. Certificate authority - Wikipedia

    en.wikipedia.org/wiki/Certificate_authority

    Certificate authority. In cryptography, a certificate authority or certification authority (CA) is an entity that stores, signs, and issues digital certificates. A digital certificate certifies the ownership of a public key by the named subject of the certificate. This allows others (relying parties) to rely upon signatures or on assertions ...

  4. Certificate Transparency - Wikipedia

    en.wikipedia.org/wiki/Certificate_Transparency

    Certificate Transparency (CT) is an Internet security standard for monitoring and auditing the issuance of digital certificates. [1] When an internet user interacts with a website, a trusted third party is needed for assurance that the website is legitimate and that the website's encryption key is valid. This third party, called a certificate ...

  5. DNS-based Authentication of Named Entities - Wikipedia

    en.wikipedia.org/wiki/DNS-based_Authentication...

    Internet securityprotocols. DNS-based Authentication of Named Entities (DANE) is an Internet security protocol to allow X.509 digital certificates, commonly used for Transport Layer Security (TLS), to be bound to domain names using Domain Name System Security Extensions (DNSSEC). [1]

  6. Let's Encrypt - Wikipedia

    en.wikipedia.org/wiki/Let's_Encrypt

    US$3.6 million[1] Staff (2023) 27 [2] Website. letsencrypt.org. Let's Encrypt is a non-profit certificate authority run by Internet Security Research Group (ISRG) that provides X.509 certificates for Transport Layer Security (TLS) encryption at no charge. It is the world's largest certificate authority, [3] used by more than 300 million ...

  7. CAcert.org - Wikipedia

    en.wikipedia.org/wiki/CAcert.org

    CAcert Inc. CAcert.org is a community-driven certificate authority that issues free X.509 public key certificates. [ 1] CAcert.org relies heavily on automation and therefore issues only Domain-validated certificates (and not Extended validation or Organization Validation certificates).

  8. X.509 - Wikipedia

    en.wikipedia.org/wiki/X.509

    An EV certificate means a certificate was issued for a domain like example.com, and a company like Example, LLC is the owner of the domain, and the owner was verified by Articles of Incorporation. Extended validation does not add any additional security controls, so the secure channel setup using an EV certificate is not "stronger" than a ...

  9. AOL Mail

    mail.aol.com

    You can find instant answers on our AOL Mail help page. Should you need additional assistance we have experts available around the clock at 800-730-2563.