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  2. Certificate revocation list - Wikipedia

    en.wikipedia.org/wiki/Certificate_revocation_list

    This reversible status can be used to note the temporary invalidity of the certificate (e.g., if the user is unsure if the private key has been lost). If, in this example, the private key was found and nobody had access to it, the status could be reinstated, and the certificate is valid again, thus removing the certificate from future CRLs.

  3. Wikipedia : Guide to appealing blocks

    en.wikipedia.org/wiki/Wikipedia:Guide_to...

    A small number of administrators, called Oversighters, are the only users who can suppress material, as well as access or view suppressed material. Editors may sometimes be blocked for repeatedly adding such problematic material to Wikipedia despite being asked to stop, or for other reasons that relate to information that has been suppressed.

  4. Access-control list - Wikipedia

    en.wikipedia.org/wiki/Access-control_list

    In computer security, an access-control list (ACL) is a list of permissions [a] associated with a system resource (object or facility). An ACL specifies which users or system processes are granted access to resources, as well as what operations are allowed on given resources. [ 1 ]

  5. HTTP 404 - Wikipedia

    en.wikipedia.org/wiki/HTTP_404

    404.11 – Request contains double escape sequence. 404.12 – Request contains high-bit characters. 404.13 – Content length too large. 404.14 – Request URL too long. 404.15 – Query string too long. 404.16 – DAV request sent to the static file handler. 404.17 – Dynamic content mapped to the static file handler via a wildcard MIME mapping.

  6. WannaCry ransomware attack - Wikipedia

    en.wikipedia.org/wiki/WannaCry_ransomware_attack

    In December 2017, the United States and United Kingdom formally asserted that North Korea was behind the attack, although North Korea has denied any involvement with the attack. [ 7 ] A new variant of WannaCry forced Taiwan Semiconductor Manufacturing Company (TSMC) to temporarily shut down several of its chip-fabrication factories in August 2018.

  7. robots.txt - Wikipedia

    en.wikipedia.org/wiki/Robots.txt

    A robots.txt file contains instructions for bots indicating which web pages they can and cannot access. Robots.txt files are particularly important for web crawlers from search engines such as Google. A robots.txt file on a website will function as a request that specified robots ignore specified files or directories when crawling a site.

  8. Censorship of Wikipedia - Wikipedia

    en.wikipedia.org/wiki/Censorship_of_Wikipedia

    Access to Wikipedia has varied over the years with the Chinese language version being controlled more tightly than other versions. As of April 2019, all versions of Wikipedia are blocked in mainland China under the Great Firewall. [8] [9] [10] The Chinese Wikipedia was launched in May 2001. [11]

  9. Wikipedia : Media copyright questions

    en.wikipedia.org/wiki/Wikipedia:Media_copyright...

    In the first case, you can add the template {} to the top of the page of file you removed and in the second case you can add {} to the top of the page of the file you updated. In the first case, please make sure to notify the uploader of the file so that they're aware that their file has been replaced and is no longer being used.