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  2. Fix security certificate error messages in Internet Explorer

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

    Seeing security certificate errors when visiting certain websites? Learn how to remedy this issue in Internet Explorer.

  3. List of HTTP status codes - Wikipedia

    en.wikipedia.org/wiki/List_of_HTTP_status_codes

    Code 499 indicates that a token is required but was not submitted. [37] 509 Bandwidth Limit Exceeded (Apache Web Server/cPanel) The server has exceeded the bandwidth specified by the server administrator; this is often used by shared hosting providers to limit the bandwidth of customers. [38] 529 Site is overloaded

  4. Certificate revocation - Wikipedia

    en.wikipedia.org/wiki/Certificate_revocation

    Let's Revoke uses bit vectors of revocation statuses (called certificate revocation vectors, or CRVs) to allow large amounts of revocation statuses to be efficiently retrieved by clients. [4] CAs generate CRVs for their own certificates, with one CRV per expiration date. CRV maintenance for CAs is linear in the number of certificates issued ...

  5. Certificate revocation list - Wikipedia

    en.wikipedia.org/wiki/Certificate_revocation_list

    Expiration dates are not a substitute for a CRL. While all expired certificates are considered invalid, not all unexpired certificates should be valid. CRLs or other certificate validation techniques are a necessary part of any properly operated PKI, as mistakes in certificate vetting and key management are expected to occur in real world ...

  6. Let's Encrypt's root certificate has expired, and it might ...

    www.aol.com/news/lets-encrypts-root-certificate...

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  7. One of China's biggest bitcoin mining companies now ... - AOL

    www.aol.com/one-chinas-biggest-bitcoin-mining...

    An international company that once operated the world's largest data center in China now runs an expansive cryptocurrency mining business on Seiberling Street in Akron with the ability to draw ...

  8. Key management - Wikipedia

    en.wikipedia.org/wiki/Key_management

    Certificates that are not renewed and replaced before they expire can cause serious downtime and outages. Some other considerations: Regulations and requirements, like PCI-DSS, [4] demand stringent security and management of cryptographic keys and auditors are increasingly reviewing the management controls and processes in use.

  9. Certificate Management Protocol - Wikipedia

    en.wikipedia.org/wiki/Certificate_Management...

    The Certificate Management Protocol (CMP) is an Internet protocol standardized by the IETF used for obtaining X.509 digital certificates in a public key infrastructure (PKI). CMP is a very feature-rich and flexible protocol, supporting many types of cryptography.