{"id":3653,"date":"2026-04-12T17:03:08","date_gmt":"2026-04-12T15:03:08","guid":{"rendered":"https:\/\/www.steffiscloud.de\/?post_type=glossary&#038;p=3653"},"modified":"2026-04-12T17:03:10","modified_gmt":"2026-04-12T15:03:10","slug":"blacklists","status":"publish","type":"glossary","link":"https:\/\/www.steffiscloud.de\/en\/glossary-en\/blacklists\/","title":{"rendered":"blacklists"},"content":{"rendered":"<p>Blacklists<br><br>Blacklists are lists of known malicious or untrusted entities such as IP addresses, domains, or email senders that are blocked to prevent security threats. They are commonly used in email filtering, firewalls, and web security systems to stop <a class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"&lt;div class=glossaryItemBody&gt; &amp;lt;!-- wp:paragraph --&amp;gt;\n&amp;lt;p&amp;gt;Spam&amp;lt;br&amp;gt;&amp;lt;br&amp;gt;Spam refers to unwanted and unsolicited messages, typically sent in bulk via email or other communication channels. These messages are often used for advertising, phishing, or distributing malware. Effective spam protection systems filter and analyze incoming messages to detect suspicious content and prevent potential security threats before they reach users.&amp;lt;\/p&amp;gt;\n&amp;lt;!-- \/wp:paragraph --&amp;gt; &lt;\/div&gt;\" href=\"https:\/\/www.steffiscloud.de\/en\/glossary-en\/spam\/\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">spam<\/a>, <a class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"&lt;div class=glossaryItemBody&gt; &amp;lt;!-- wp:paragraph --&amp;gt;\n&amp;lt;p&amp;gt;Phishing&amp;lt;br&amp;gt;&amp;lt;br&amp;gt;Phishing is a cyberattack where attackers attempt to trick users into revealing sensitive information such as passwords or financial data&amp;lt;\/p&amp;gt;\n&amp;lt;!-- \/wp:paragraph --&amp;gt; &lt;\/div&gt;\" href=\"https:\/\/www.steffiscloud.de\/en\/glossary-en\/phishing\/\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">phishing<\/a>, and <a class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"&lt;div class=glossaryItemBody&gt; &amp;lt;!-- wp:paragraph --&amp;gt;\n&amp;lt;p&amp;gt;Malware&amp;lt;br&amp;gt;&amp;lt;br&amp;gt;Malware (malicious software) refers to any type of software designed to harm, disrupt, or gain unauthorized access to systems and data. This includes viruses, ransomware, spyware, and trojans. Malware can steal sensitive information, damage systems, or take control of devices, making effective detection and prevention essential for cybersecurity.&amp;lt;\/p&amp;gt;\n&amp;lt;!-- \/wp:paragraph --&amp;gt; &lt;\/div&gt;\" href=\"https:\/\/www.steffiscloud.de\/en\/glossary-en\/malware\/\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">malware<\/a> before they can reach users or systems. Regular updates ensure that newly identified threats are quickly included.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Blacklists Blacklists are lists of known malicious or untrusted entities such as IP addresses, domains, or email senders that are [&#x2026;]<\/p>\n","protected":false},"author":1,"featured_media":0,"menu_order":168,"template":"","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"glossary-categories":[],"glossary-tags":[],"glossary-languages":[19],"glossary-cat":[],"class_list":["post-3653","glossary","type-glossary","status-publish","hentry","glossary-languages-en"],"post_title":"blacklists","post_content":"<!-- wp:paragraph -->\n<p>Blacklists<br><br>Blacklists are lists of known malicious or untrusted entities such as IP addresses, domains, or email senders that are blocked to prevent security threats. They are commonly used in email filtering, firewalls, and web security systems to stop spam, phishing, and malware before they can reach users or systems. Regular updates ensure that newly identified threats are quickly included.<\/p>\n<!-- \/wp:paragraph -->","related_terms":"","external_url":"","internal_reference_id":"","_links":{"self":[{"href":"https:\/\/www.steffiscloud.de\/en\/wp-json\/wp\/v2\/glossary\/3653","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.steffiscloud.de\/en\/wp-json\/wp\/v2\/glossary"}],"about":[{"href":"https:\/\/www.steffiscloud.de\/en\/wp-json\/wp\/v2\/types\/glossary"}],"author":[{"embeddable":true,"href":"https:\/\/www.steffiscloud.de\/en\/wp-json\/wp\/v2\/users\/1"}],"version-history":[{"count":0,"href":"https:\/\/www.steffiscloud.de\/en\/wp-json\/wp\/v2\/glossary\/3653\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.steffiscloud.de\/en\/wp-json\/wp\/v2\/media?parent=3653"}],"wp:term":[{"taxonomy":"glossary-categories","embeddable":true,"href":"https:\/\/www.steffiscloud.de\/en\/wp-json\/wp\/v2\/glossary-categories?post=3653"},{"taxonomy":"glossary-tags","embeddable":true,"href":"https:\/\/www.steffiscloud.de\/en\/wp-json\/wp\/v2\/glossary-tags?post=3653"},{"taxonomy":"glossary-languages","embeddable":true,"href":"https:\/\/www.steffiscloud.de\/en\/wp-json\/wp\/v2\/glossary-languages?post=3653"},{"taxonomy":"glossary-cat","embeddable":true,"href":"https:\/\/www.steffiscloud.de\/en\/wp-json\/wp\/v2\/glossary-cat?post=3653"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}