{"id":7016,"date":"2026-06-20T12:15:00","date_gmt":"2026-06-20T10:15:00","guid":{"rendered":"https:\/\/www.digitalnisebeobrana.cz\/?post_type=glossary&p=7016"},"modified":"2026-06-20T12:15:00","modified_gmt":"2026-06-20T10:15:00","slug":"dns-exfiltrace","status":"publish","type":"glossary","link":"https:\/\/www.digitalnisebeobrana.cz\/en\/glossary\/dns-exfiltrace\/","title":{"rendered":"DNS exfiltration"},"content":{"rendered":"

DNS exfiltration is data theft through DNS. An attacker can split data into small pieces and send them in domain names or TXT answers. It can look like normal DNS traffic, so unusual domains, query lengths and traffic volume matter.<\/p>\n","protected":false},"excerpt":{"rendered":"

Moving data out of a system using DNS queries or responses.<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"template":"","glossary-cat":[],"class_list":["post-7016","glossary","type-glossary","status-publish","hentry"],"translation":{"provider":"WPGlobus","version":"3.0.3","language":"en","enabled_languages":["cs","en"],"languages":{"cs":{"title":true,"content":true,"excerpt":true},"en":{"title":true,"content":true,"excerpt":true}}},"yoast_head":"\nDNS exfiltration - DIGITAL SELF-DEFENSE<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.digitalnisebeobrana.cz\/glossary\/dns-exfiltrace\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"DNS exfiltration - DIGITAL SELF-DEFENSE\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.digitalnisebeobrana.cz\/glossary\/dns-exfiltrace\/\" \/>\n<meta property=\"og:site_name\" content=\"DIGITAL SELF-DEFENSE\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/digitalnisebeobrana\/\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:site\" content=\"@sodomak\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.digitalnisebeobrana.cz\\\/glossary\\\/dns-exfiltrace\\\/\",\"url\":\"https:\\\/\\\/www.digitalnisebeobrana.cz\\\/glossary\\\/dns-exfiltrace\\\/\",\"name\":\"DNS exfiltration - DIGITAL SELF-DEFENSE\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.digitalnisebeobrana.cz\\\/en\\\/#website\"},\"datePublished\":\"2026-06-20T10:15:00+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/www.digitalnisebeobrana.cz\\\/glossary\\\/dns-exfiltrace\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.digitalnisebeobrana.cz\\\/glossary\\\/dns-exfiltrace\\\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/www.digitalnisebeobrana.cz\\\/glossary\\\/dns-exfiltrace\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/www.digitalnisebeobrana.cz\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Glossary\",\"item\":\"https:\\\/\\\/www.digitalnisebeobrana.cz\\\/glossary\\\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"DNS exfiltration\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.digitalnisebeobrana.cz\\\/en\\\/#website\",\"url\":\"https:\\\/\\\/www.digitalnisebeobrana.cz\\\/en\\\/\",\"name\":\"DIGITAL SELF-DEFENSE\",\"description\":\"\",\"publisher\":{\"@id\":\"https:\\\/\\\/www.digitalnisebeobrana.cz\\\/en\\\/#\\\/schema\\\/person\\\/e932432719ebfc02a9b05e7b12047736\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/www.digitalnisebeobrana.cz\\\/en\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":[\"Person\",\"Organization\"],\"@id\":\"https:\\\/\\\/www.digitalnisebeobrana.cz\\\/en\\\/#\\\/schema\\\/person\\\/e932432719ebfc02a9b05e7b12047736\",\"name\":\"Milan\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/www.digitalnisebeobrana.cz\\\/wp-content\\\/uploads\\\/2022\\\/01\\\/logo.png\",\"url\":\"https:\\\/\\\/www.digitalnisebeobrana.cz\\\/wp-content\\\/uploads\\\/2022\\\/01\\\/logo.png\",\"contentUrl\":\"https:\\\/\\\/www.digitalnisebeobrana.cz\\\/wp-content\\\/uploads\\\/2022\\\/01\\\/logo.png\",\"width\":613,\"height\":73,\"caption\":\"Milan\"},\"logo\":{\"@id\":\"https:\\\/\\\/www.digitalnisebeobrana.cz\\\/wp-content\\\/uploads\\\/2022\\\/01\\\/logo.png\"},\"description\":\"Jmenuji se Milan P\u016flkr\u00e1bek, pamatuji si po\u010d\u00edta\u010de bez internetu, Internet bez Google a mobiln\u00ed komunikaci bez \u0161ifrov\u00e1n\u00ed. M\u00e1m za sebou v\u00edce ne\u017e dvacet let profesion\u00e1ln\u00ed praxe v IT, p\u0159edn\u00e1\u0161\u00edm a p\u00ed\u0161u \u010dl\u00e1nky o IT bezpe\u010dnosti, kryptom\u011bn\u00e1ch a nov\u00fdch technologi\u00edch. Od roku 2014 jsem sou\u010d\u00e1st\u00ed nezikov\u00e9 organizace Paraleln\u00ed Polis v Praze.\",\"sameAs\":[\"https:\\\/\\\/www.facebook.com\\\/digitalnisebeobrana\\\/\",\"https:\\\/\\\/x.com\\\/sodomak\"]}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"DNS exfiltration - DIGITAL SELF-DEFENSE","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.digitalnisebeobrana.cz\/glossary\/dns-exfiltrace\/","og_locale":"en_US","og_type":"article","og_title":"DNS exfiltration - DIGITAL SELF-DEFENSE","og_url":"https:\/\/www.digitalnisebeobrana.cz\/glossary\/dns-exfiltrace\/","og_site_name":"DIGITAL SELF-DEFENSE","article_publisher":"https:\/\/www.facebook.com\/digitalnisebeobrana\/","twitter_card":"summary_large_image","twitter_site":"@sodomak","twitter_misc":{"Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/www.digitalnisebeobrana.cz\/glossary\/dns-exfiltrace\/","url":"https:\/\/www.digitalnisebeobrana.cz\/glossary\/dns-exfiltrace\/","name":"DNS exfiltration - DIGITAL SELF-DEFENSE","isPartOf":{"@id":"https:\/\/www.digitalnisebeobrana.cz\/en\/#website"},"datePublished":"2026-06-20T10:15:00+00:00","breadcrumb":{"@id":"https:\/\/www.digitalnisebeobrana.cz\/glossary\/dns-exfiltrace\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.digitalnisebeobrana.cz\/glossary\/dns-exfiltrace\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/www.digitalnisebeobrana.cz\/glossary\/dns-exfiltrace\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.digitalnisebeobrana.cz\/"},{"@type":"ListItem","position":2,"name":"Glossary","item":"https:\/\/www.digitalnisebeobrana.cz\/glossary\/"},{"@type":"ListItem","position":3,"name":"DNS exfiltration"}]},{"@type":"WebSite","@id":"https:\/\/www.digitalnisebeobrana.cz\/en\/#website","url":"https:\/\/www.digitalnisebeobrana.cz\/en\/","name":"DIGITAL SELF-DEFENSE","description":"","publisher":{"@id":"https:\/\/www.digitalnisebeobrana.cz\/en\/#\/schema\/person\/e932432719ebfc02a9b05e7b12047736"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.digitalnisebeobrana.cz\/en\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":["Person","Organization"],"@id":"https:\/\/www.digitalnisebeobrana.cz\/en\/#\/schema\/person\/e932432719ebfc02a9b05e7b12047736","name":"Milan","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.digitalnisebeobrana.cz\/wp-content\/uploads\/2022\/01\/logo.png","url":"https:\/\/www.digitalnisebeobrana.cz\/wp-content\/uploads\/2022\/01\/logo.png","contentUrl":"https:\/\/www.digitalnisebeobrana.cz\/wp-content\/uploads\/2022\/01\/logo.png","width":613,"height":73,"caption":"Milan"},"logo":{"@id":"https:\/\/www.digitalnisebeobrana.cz\/wp-content\/uploads\/2022\/01\/logo.png"},"description":"Jmenuji se Milan P\u016flkr\u00e1bek, pamatuji si po\u010d\u00edta\u010de bez internetu, Internet bez Google a mobiln\u00ed komunikaci bez \u0161ifrov\u00e1n\u00ed. M\u00e1m za sebou v\u00edce ne\u017e dvacet let profesion\u00e1ln\u00ed praxe v IT, p\u0159edn\u00e1\u0161\u00edm a p\u00ed\u0161u \u010dl\u00e1nky o IT bezpe\u010dnosti, kryptom\u011bn\u00e1ch a nov\u00fdch technologi\u00edch. Od roku 2014 jsem sou\u010d\u00e1st\u00ed nezikov\u00e9 organizace Paraleln\u00ed Polis v Praze.","sameAs":["https:\/\/www.facebook.com\/digitalnisebeobrana\/","https:\/\/x.com\/sodomak"]}]}},"_links":{"self":[{"href":"https:\/\/www.digitalnisebeobrana.cz\/en\/wp-json\/wp\/v2\/glossary\/7016","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.digitalnisebeobrana.cz\/en\/wp-json\/wp\/v2\/glossary"}],"about":[{"href":"https:\/\/www.digitalnisebeobrana.cz\/en\/wp-json\/wp\/v2\/types\/glossary"}],"author":[{"embeddable":true,"href":"https:\/\/www.digitalnisebeobrana.cz\/en\/wp-json\/wp\/v2\/users\/1"}],"version-history":[{"count":0,"href":"https:\/\/www.digitalnisebeobrana.cz\/en\/wp-json\/wp\/v2\/glossary\/7016\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.digitalnisebeobrana.cz\/en\/wp-json\/wp\/v2\/media?parent=7016"}],"wp:term":[{"taxonomy":"glossary-cat","embeddable":true,"href":"https:\/\/www.digitalnisebeobrana.cz\/en\/wp-json\/wp\/v2\/glossary-cat?post=7016"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}