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2. Blacklist (computing) - Wikipedia

   en.wikipedia.org/wiki/Blacklist_(computing)

   In computing, a blacklist, disallowlist, blocklist, or denylist is a basic access control mechanism that allows through all elements (email addresses, users, passwords, URLs, IP addresses, domain names, file hashes, etc.), except those explicitly mentioned. Those items on the list are denied access. The opposite is a whitelist, allowlist, or ...

3. Spam and Open Relay Blocking System - Wikipedia

   en.wikipedia.org/wiki/Spam_and_Open_Relay...

   The Spam and Open Relay Blocking System. SORBS (" Spam and Open Relay Blocking System ") was a list of e-mail servers suspected of sending or relaying spam (a DNS Blackhole List). It had been augmented with complementary lists that include various other classes of hosts, allowing for customized email rejection by its users.

4. Wikipedia:Spam blacklist - Wikipedia

   en.wikipedia.org/wiki/Wikipedia:Spam_blacklist

   The spam blacklist is a control mechanism that prevents an external link from being added to any page when the URL matches regex rules listed at the local or global blacklist, or belongs to a site listed at Special:BlockedExternalDomains. These lists mostly contain spam sites, but also include URL redirection services (which could otherwise be ...

5. DNS sinkhole - Wikipedia

   en.wikipedia.org/wiki/DNS_sinkhole

   DNS sinkhole. A DNS sinkhole, also known as a sinkhole server, Internet sinkhole, or Blackhole DNS[1] is a Domain Name System (DNS) server that has been configured to hand out non-routable addresses for a certain set of domain names. Computers that use the sinkhole fail to access the real site. [2] The higher up the DNS resolution chain the ...

6. Child abuse image content list - Wikipedia

   en.wikipedia.org/wiki/Child_abuse_image_content_list

   The confidential url hash blacklist contains URLs of pages (not whole sites) to be blocked. A less confidential list of sites potentially containing blocked pages is available to ISPs. Routers on the edge redirect traffic to these sites to special HTTP proxy servers which perform the actual filtering by matching HTTP requests to URLs on the ...

7. HTML sanitization - Wikipedia

   en.wikipedia.org/wiki/HTML_sanitization

   HTML sanitization. In data sanitization, HTML sanitization is the process of examining an HTML document and producing a new HTML document that preserves only whatever tags and attributes are designated "safe" and desired. HTML sanitization can be used to protect against attacks such as cross-site scripting (XSS) by sanitizing any HTML code ...