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Das Verhalten könnte sich in Zukunft ändern."> <span class="visually-hidden">Experimentell</span> </abbr></li><li><a href="/de/docs/Web/Security/Mixed_content">Mixed Content</a></li><li><a href="/de/docs/Web/Security/Practical_implementation_guides">Praktische Anleitungen zur Sicherheitsimplementierung</a><ol><li><a href="/de/docs/Web/Security/Practical_implementation_guides/CORS">Cross-Origin Resource Sharing (CORS) Konfiguration</a></li><li><a href="/de/docs/Web/Security/Practical_implementation_guides/CSRF_prevention">Cross-site request forgery (CSRF) Prävention</a></li><li><a href="/de/docs/Web/Security/Practical_implementation_guides/CSP">Implementierung der Content Security Policy (CSP)</a></li><li><a href="/de/docs/Web/Security/Practical_implementation_guides/CORP">Implementierung der Cross-Origin Resource Policy (CORP)</a></li><li><a href="/de/docs/Web/Security/Practical_implementation_guides/Referrer_policy">Konfiguration der Referrer-Policy</a></li><li><a href="/de/docs/Web/Security/Practical_implementation_guides/MIME_types">MIME-Typ-Verifizierung</a></li><li><a href="/de/docs/Web/Security/Practical_implementation_guides/Cookies">Sichere Cookie-Konfiguration</a></li><li><a href="/de/docs/Web/Security/Practical_implementation_guides/SRI">Subresource Integrity (SRI) Implementierung</a></li><li><a href="/de/docs/Web/Security/Practical_implementation_guides/TLS">Transport Layer Security (TLS)-Konfiguration</a></li><li><a href="/de/docs/Web/Security/Practical_implementation_guides/Clickjacking">Verhinderung von Clickjacking</a></li><li><a href="/de/docs/Web/Security/Practical_implementation_guides/Turning_off_form_autocompletion">Wie Sie die Formular-Autovervollständigung deaktivieren</a></li><li><a href="/de/docs/Web/Security/Practical_implementation_guides/Robots_txt">robots.txt-Konfiguration</a></li></ol></li><li><a href="/de/docs/Web/Security/Same-origin_policy">Same-Origin-Policy</a></li><li><a href="/de/docs/Web/Security/Weak_Signature_Algorithm">Schwache Signaturalgorithmen</a></li><li><em><a href="/de/docs/Web/Security/Secure_Contexts" aria-current="page">Secure contexts</a><ol><li><a href="/de/docs/Web/Security/Secure_Contexts/features_restricted_to_secure_contexts">Funktionen, die auf sichere Kontexte beschränkt sind</a></li></ol></em></li><li><a href="/de/docs/Web/Security/Subdomain_takeovers">Subdomain-Übernahmen</a></li><li><a href="/de/docs/Web/Security/Subresource_Integrity">Subresource Integrity</a></li><li><a href="/de/docs/Web/Security/Transport_Layer_Security">Transport Layer Security</a></li><li><a href="/de/docs/Web/Security/Insecure_passwords">Unsichere Passwörter</a></li><li><a href="/de/docs/Web/Security/Referer_header:_privacy_and_security_concerns">`Referer` Header: Datenschutz- und Sicherheitsbedenken</a></li></ol></div></div><section class="place side"></section></nav></aside><div class="toc-container"><aside class="toc"><nav><div class="document-toc-container"><section class="document-toc"><header><h2 class="document-toc-heading">In diesem Artikel</h2></header><ul class="document-toc-list"><li class="document-toc-item "><a class="document-toc-link" href="#warum_sollten_einige_funktionen_eingeschränkt_werden">Warum sollten einige Funktionen eingeschränkt werden?</a></li><li class="document-toc-item "><a class="document-toc-link" href="#wann_wird_ein_kontext_als_sicher_angesehen">Wann wird ein Kontext als sicher angesehen?</a></li><li class="document-toc-item "><a class="document-toc-link" href="#feature-erkennung">Feature-Erkennung</a></li><li class="document-toc-item "><a class="document-toc-link" href="#spezifikationen">Spezifikationen</a></li><li class="document-toc-item "><a class="document-toc-link" href="#siehe_auch">Siehe auch</a></li></ul></section></div></nav></aside><section class="place side"></section></div></div><main id="content" class="main-content "><article class="main-page-content" lang="de"><header><h1>Secure contexts</h1></header><div class="section-content"><p>Ein <strong>sicherer Kontext</strong> ist ein <code>Window</code> oder <code>Worker</code>, für den bestimmte Mindeststandards für Authentifizierung und Vertraulichkeit erfüllt sind. Viele Web-APIs und Funktionen sind nur in einem sicheren Kontext zugänglich. Das Hauptziel sicherer Kontexte ist es, <a href="https://en.wikipedia.org/wiki/Man-in-the-middle_attack" class="external" target="_blank">MITM-Angreifer</a> daran zu hindern, auf leistungsstarke APIs zuzugreifen, die das Opfer eines Angriffs weiter gefährden könnten.</p></div><section aria-labelledby="warum_sollten_einige_funktionen_eingeschränkt_werden"><h2 id="warum_sollten_einige_funktionen_eingeschränkt_werden"><a href="#warum_sollten_einige_funktionen_eingeschränkt_werden">Warum sollten einige Funktionen eingeschränkt werden?</a></h2><div class="section-content"><p>Einige APIs im Web sind sehr leistungsfähig und geben einem Angreifer die Möglichkeit, Folgendes zu tun und mehr:</p> <ul> <li>Eine Verletzung der Privatsphäre des Benutzers.</li> <li>Niedrigstufigen Zugriff auf den Computer eines Benutzers.</li> <li>Zugriff auf Daten wie Benutzeranmeldedaten.</li> </ul></div></section><section aria-labelledby="wann_wird_ein_kontext_als_sicher_angesehen"><h2 id="wann_wird_ein_kontext_als_sicher_angesehen"><a href="#wann_wird_ein_kontext_als_sicher_angesehen">Wann wird ein Kontext als sicher angesehen?</a></h2><div class="section-content"><p>Ein Kontext wird als sicher angesehen, wenn er bestimmte Mindeststandards für Authentifizierung und Vertraulichkeit erfüllt, die in der <a href="https://w3c.github.io/webappsec-secure-contexts/" class="external" target="_blank">Secure Contexts</a>-Spezifikation definiert sind. Ein bestimmtes Dokument wird als sicherer Kontext betrachtet, wenn es das <a href="https://html.spec.whatwg.org/multipage/browsers.html#active-document" class="external" target="_blank">aktive Dokument</a> eines <a href="https://html.spec.whatwg.org/multipage/browsers.html#top-level-browsing-context" class="external" target="_blank">Top-Level-Browsing-Kontextes</a> ist (im Wesentlichen ein enthaltenes Fenster oder Tab), das ein sicherer Kontext ist.</p> <p>Zum Beispiel wird auch für ein über TLS geliefertes Dokument innerhalb eines <a href="/de/docs/Web/HTML/Element/iframe"><code><iframe></code></a> sein Kontext <strong>nicht</strong> als sicher angesehen, wenn es einen Vorfahren hat, der nicht ebenfalls über TLS geliefert wurde.</p> <p>Es ist jedoch wichtig zu beachten, dass, wenn ein unsicherer Kontext ein neues Fenster öffnet (mit oder ohne Angabe von <a href="/de/docs/Web/API/Window/open">noopener</a>), die Tatsache, dass der Öffner unsicher war, keinen Einfluss darauf hat, ob das neue Fenster als sicher betrachtet wird. Das liegt daran, dass die Bestimmung, ob ein bestimmtes Dokument in einem sicheren Kontext vorliegt, nur auf der Betrachtung innerhalb des mit ihm verbundenen Top-Level-Browsing-Kontextes basiert — und nicht darauf, ob ein unsicherer Kontext zufällig für seine Erstellung verwendet wurde.</p> <p>Lokal bereitgestellte Ressourcen, wie solche mit <code>http://127.0.0.1</code> URLs, <code>http://localhost</code> und <code>http://*.localhost</code> URLs (z.B. <code>http://dev.whatever.localhost/</code>), sowie <code>file://</code> URLs werden ebenfalls als sicher geliefert betrachtet.</p> <div class="notecard note"> <p><strong>Hinweis:</strong> Firefox 84 und später unterstützen <code>http://localhost</code> und <code>http://*.localhost</code> URLs als vertrauenswürdige Ursprünge (frühere Versionen nicht, da <code>localhost</code> nicht garantiert auf eine lokale/Loopback-Adresse abgebildet wurde).</p> </div> <p>Ressourcen, die nicht lokal sind, müssen folgende Kriterien erfüllen, um als sicher angesehen zu werden:</p> <ul> <li>müssen über <code>https://</code> oder <code>wss://</code> URLs bereitgestellt werden</li> <li>die Sicherheitseigenschaften des für die Bereitstellung der Ressource verwendeten Netzwerkanals dürfen nicht als veraltet angesehen werden</li> </ul></div></section><section aria-labelledby="feature-erkennung"><h2 id="feature-erkennung"><a href="#feature-erkennung">Feature-Erkennung</a></h2><div class="section-content"><p>Seiten können die Feature-Erkennung verwenden, um zu überprüfen, ob sie sich in einem sicheren Kontext befinden oder nicht, indem sie das <a href="/de/docs/Web/API/Window/isSecureContext"><code>Window.isSecureContext</code></a> oder <a href="/de/docs/Web/API/WorkerGlobalScope/isSecureContext"><code>WorkerGlobalScope.isSecureContext</code></a> Boolean verwenden, welches im globalen Scope verfügbar ist.</p> <div class="code-example"><div class="example-header"><span class="language-name">js</span></div><pre class="brush: js notranslate"><code>if (window.isSecureContext) { // Page is a secure context so service workers are now available navigator.serviceWorker.register("/offline-worker.js").then(() => { // … }); } </code></pre></div></div></section><h2 id="spezifikationen"><a href="#spezifikationen">Spezifikationen</a></h2><table class="standard-table"><thead><tr><th scope="col">Specification</th></tr></thead><tbody><tr><td><a href="https://w3c.github.io/webappsec-secure-contexts/">Secure Contexts <br/></a></td></tr></tbody></table><section aria-labelledby="siehe_auch"><h2 id="siehe_auch"><a href="#siehe_auch">Siehe auch</a></h2><div class="section-content"><ul> <li><a href="/de/docs/Web/Security/Secure_Contexts/features_restricted_to_secure_contexts">Plattformfunktionen, die auf sichere Kontexte beschränkt sind</a> — eine Liste der nur in sicheren Kontexten verfügbaren Funktionen</li> <li><a href="/de/docs/Web/API/Window/isSecureContext"><code>Window.isSecureContext</code></a> und <a href="/de/docs/Web/API/WorkerGlobalScope/isSecureContext"><code>WorkerGlobalScope.isSecureContext</code></a></li> <li><a href="https://permission.site" class="external" target="_blank">https://permission.site</a> — Eine Seite, die es Ihnen ermöglicht zu überprüfen, welche API-Berechtigungsprüfungen Ihr Browser über HTTP und HTTPS anwendet</li> <li><a href="/de/docs/Web/HTTP/Headers/Strict-Transport-Security">Strict-Transport-Security</a> HTTP-Header</li> </ul></div></section></article><aside class="article-footer"><div class="article-footer-inner"><div class="svg-container"><svg xmlns="http://www.w3.org/2000/svg" width="162" height="162" viewBox="0 0 162 162" fill="none" role="none"><mask id="b" fill="#fff"><path d="M97.203 47.04c8.113-7.886 18.004-13.871 28.906-17.492a78 78 0 0 1 33.969-3.39c11.443 1.39 22.401 5.295 32.024 11.411s17.656 14.28 23.476 23.86c5.819 9.579 9.269 20.318 10.083 31.385a69.85 69.85 0 0 1-5.387 32.44c-4.358 10.272-11.115 19.443-19.747 26.801-8.632 7.359-18.908 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content are ©1998–2025 by individual mozilla.org contributors. Content available under <a href="/de/docs/MDN/Writing_guidelines/Attrib_copyright_license">a Creative Commons license</a>.</p></div></div></footer></div><script type="application/json" id="hydration">{"url":"/de/docs/Web/Security/Secure_Contexts","doc":{"body":[{"type":"prose","value":{"id":null,"title":null,"isH3":false,"content":"<p>Ein <strong>sicherer Kontext</strong> ist ein <code>Window</code> oder <code>Worker</code>, für den bestimmte Mindeststandards für Authentifizierung und Vertraulichkeit erfüllt sind. Viele Web-APIs und Funktionen sind nur in einem sicheren Kontext zugänglich. Das Hauptziel sicherer Kontexte ist es, <a href=\"https://en.wikipedia.org/wiki/Man-in-the-middle_attack\" class=\"external\" target=\"_blank\">MITM-Angreifer</a> daran zu hindern, auf leistungsstarke APIs zuzugreifen, die das Opfer eines Angriffs weiter gefährden könnten.</p>"}},{"type":"prose","value":{"id":"warum_sollten_einige_funktionen_eingeschränkt_werden","title":"Warum sollten einige Funktionen eingeschränkt werden?","isH3":false,"content":"<p>Einige APIs im Web sind sehr leistungsfähig und geben einem Angreifer die Möglichkeit, Folgendes zu tun und mehr:</p>\n<ul>\n<li>Eine Verletzung der Privatsphäre des Benutzers.</li>\n<li>Niedrigstufigen Zugriff auf den Computer eines Benutzers.</li>\n<li>Zugriff auf Daten wie Benutzeranmeldedaten.</li>\n</ul>"}},{"type":"prose","value":{"id":"wann_wird_ein_kontext_als_sicher_angesehen","title":"Wann wird ein Kontext als sicher angesehen?","isH3":false,"content":"<p>Ein Kontext wird als sicher angesehen, wenn er bestimmte Mindeststandards für Authentifizierung und Vertraulichkeit erfüllt, die in der <a href=\"https://w3c.github.io/webappsec-secure-contexts/\" class=\"external\" target=\"_blank\">Secure Contexts</a>-Spezifikation definiert sind. Ein bestimmtes Dokument wird als sicherer Kontext betrachtet, wenn es das <a href=\"https://html.spec.whatwg.org/multipage/browsers.html#active-document\" class=\"external\" target=\"_blank\">aktive Dokument</a> eines <a href=\"https://html.spec.whatwg.org/multipage/browsers.html#top-level-browsing-context\" class=\"external\" target=\"_blank\">Top-Level-Browsing-Kontextes</a> ist (im Wesentlichen ein enthaltenes Fenster oder Tab), das ein sicherer Kontext ist.</p>\n<p>Zum Beispiel wird auch für ein über TLS geliefertes Dokument innerhalb eines <a href=\"/de/docs/Web/HTML/Element/iframe\"><code><iframe></code></a> sein Kontext <strong>nicht</strong> als sicher angesehen, wenn es einen Vorfahren hat, der nicht ebenfalls über TLS geliefert wurde.</p>\n<p>Es ist jedoch wichtig zu beachten, dass, wenn ein unsicherer Kontext ein neues Fenster öffnet (mit oder ohne Angabe von <a href=\"/de/docs/Web/API/Window/open\">noopener</a>), die Tatsache, dass der Öffner unsicher war, keinen Einfluss darauf hat, ob das neue Fenster als sicher betrachtet wird. Das liegt daran, dass die Bestimmung, ob ein bestimmtes Dokument in einem sicheren Kontext vorliegt, nur auf der Betrachtung innerhalb des mit ihm verbundenen Top-Level-Browsing-Kontextes basiert — und nicht darauf, ob ein unsicherer Kontext zufällig für seine Erstellung verwendet wurde.</p>\n<p>Lokal bereitgestellte Ressourcen, wie solche mit <code>http://127.0.0.1</code> URLs, <code>http://localhost</code> und <code>http://*.localhost</code> URLs (z.B. <code>http://dev.whatever.localhost/</code>), sowie <code>file://</code> URLs werden ebenfalls als sicher geliefert betrachtet.</p>\n<div class=\"notecard note\">\n<p><strong>Hinweis:</strong>\nFirefox 84 und später unterstützen <code>http://localhost</code> und <code>http://*.localhost</code> URLs als vertrauenswürdige Ursprünge (frühere Versionen nicht, da <code>localhost</code> nicht garantiert auf eine lokale/Loopback-Adresse abgebildet wurde).</p>\n</div>\n<p>Ressourcen, die nicht lokal sind, müssen folgende Kriterien erfüllen, um als sicher angesehen zu werden:</p>\n<ul>\n<li>müssen über <code>https://</code> oder <code>wss://</code> URLs bereitgestellt werden</li>\n<li>die Sicherheitseigenschaften des für die Bereitstellung der Ressource verwendeten Netzwerkanals dürfen nicht als veraltet angesehen werden</li>\n</ul>"}},{"type":"prose","value":{"id":"feature-erkennung","title":"Feature-Erkennung","isH3":false,"content":"<p>Seiten können die Feature-Erkennung verwenden, um zu überprüfen, ob sie sich in einem sicheren Kontext befinden oder nicht, indem sie das <a href=\"/de/docs/Web/API/Window/isSecureContext\"><code>Window.isSecureContext</code></a> oder <a href=\"/de/docs/Web/API/WorkerGlobalScope/isSecureContext\"><code>WorkerGlobalScope.isSecureContext</code></a> Boolean verwenden, welches im globalen Scope verfügbar ist.</p>\n<div class=\"code-example\"><div class=\"example-header\"><span class=\"language-name\">js</span></div><pre class=\"brush: js notranslate\"><code>if (window.isSecureContext) {\n // Page is a secure context so service workers are now available\n navigator.serviceWorker.register(\"/offline-worker.js\").then(() => {\n // …\n });\n}\n</code></pre></div>"}},{"type":"specifications","value":{"id":"spezifikationen","title":"Spezifikationen","isH3":false,"specifications":[{"bcdSpecificationURL":"https://w3c.github.io/webappsec-secure-contexts/","title":"Secure Contexts"}],"query":"undefined"}},{"type":"prose","value":{"id":"siehe_auch","title":"Siehe auch","isH3":false,"content":"<ul>\n<li><a href=\"/de/docs/Web/Security/Secure_Contexts/features_restricted_to_secure_contexts\">Plattformfunktionen, die auf sichere Kontexte beschränkt sind</a> — eine Liste der nur in sicheren Kontexten verfügbaren Funktionen</li>\n<li><a href=\"/de/docs/Web/API/Window/isSecureContext\"><code>Window.isSecureContext</code></a> und <a href=\"/de/docs/Web/API/WorkerGlobalScope/isSecureContext\"><code>WorkerGlobalScope.isSecureContext</code></a></li>\n<li><a href=\"https://permission.site\" class=\"external\" target=\"_blank\">https://permission.site</a> — Eine Seite, die es Ihnen ermöglicht zu überprüfen, welche API-Berechtigungsprüfungen Ihr Browser über HTTP und HTTPS anwendet</li>\n<li><a href=\"/de/docs/Web/HTTP/Headers/Strict-Transport-Security\">Strict-Transport-Security</a> HTTP-Header</li>\n</ul>"}}],"isActive":true,"isMarkdown":true,"isTranslated":true,"locale":"de","mdn_url":"/de/docs/Web/Security/Secure_Contexts","modified":"2025-03-01T00:21:33.000Z","native":"Deutsch","noIndexing":false,"other_translations":[{"locale":"en-US","title":"Secure contexts","native":"English (US)"},{"locale":"fr","title":"Secure Contexts","native":"Français"},{"locale":"ja","title":"安全なコンテキスト","native":"日本語"},{"locale":"ko","title":"보안 컨텍스트","native":"한국어"},{"locale":"zh-CN","title":"安全上下文","native":"中文 (简体)"}],"pageTitle":"Secure contexts - Sicherheit im Web | MDN","parents":[{"uri":"/de/docs/Web","title":"Webtechnologie für Entwickler"},{"uri":"/de/docs/Web/Security","title":"Sicherheit im Web"},{"uri":"/de/docs/Web/Security/Secure_Contexts","title":"Secure contexts"}],"popularity":null,"short_title":"Secure contexts","sidebarHTML":"<ol><li><a href=\"/de/docs/Web/Security/Attacks\">Angriffe</a><ol><li><a href=\"/de/docs/Web/Security/Attacks/Clickjacking\">Clickjacking</a></li><li><a href=\"/de/docs/Web/Security/Attacks/XSS\">Cross-Site Scripting (XSS)</a></li></ol></li><li><a href=\"/de/docs/Web/Security/Types_of_attacks\">Arten von Angriffen</a></li><li><a href=\"/de/docs/Web/Security/Certificate_Transparency\">Certificate Transparency</a></li><li><a href=\"/de/docs/Web/Security/Firefox_Security_Guidelines\">Firefox Sicherheitsrichtlinien</a></li><li><a href=\"/de/docs/Web/Security/User_activation\">Funktionen, die durch Benutzeraktivierung gesichert sind</a></li><li><a href=\"/de/docs/Web/Security/IFrame_credentialless\">IFrame credentialless</a><abbr class=\"icon icon-experimental\" title=\"Experimentell. Das Verhalten könnte sich in Zukunft ändern.\">\n<span class=\"visually-hidden\">Experimentell</span>\n</abbr></li><li><a href=\"/de/docs/Web/Security/Mixed_content\">Mixed Content</a></li><li><a href=\"/de/docs/Web/Security/Practical_implementation_guides\">Praktische Anleitungen zur Sicherheitsimplementierung</a><ol><li><a href=\"/de/docs/Web/Security/Practical_implementation_guides/CORS\">Cross-Origin Resource Sharing (CORS) Konfiguration</a></li><li><a href=\"/de/docs/Web/Security/Practical_implementation_guides/CSRF_prevention\">Cross-site request forgery (CSRF) Prävention</a></li><li><a href=\"/de/docs/Web/Security/Practical_implementation_guides/CSP\">Implementierung der Content Security Policy (CSP)</a></li><li><a href=\"/de/docs/Web/Security/Practical_implementation_guides/CORP\">Implementierung der Cross-Origin Resource Policy (CORP)</a></li><li><a href=\"/de/docs/Web/Security/Practical_implementation_guides/Referrer_policy\">Konfiguration der Referrer-Policy</a></li><li><a href=\"/de/docs/Web/Security/Practical_implementation_guides/MIME_types\">MIME-Typ-Verifizierung</a></li><li><a href=\"/de/docs/Web/Security/Practical_implementation_guides/Cookies\">Sichere Cookie-Konfiguration</a></li><li><a href=\"/de/docs/Web/Security/Practical_implementation_guides/SRI\">Subresource Integrity (SRI) Implementierung</a></li><li><a href=\"/de/docs/Web/Security/Practical_implementation_guides/TLS\">Transport Layer Security (TLS)-Konfiguration</a></li><li><a href=\"/de/docs/Web/Security/Practical_implementation_guides/Clickjacking\">Verhinderung von Clickjacking</a></li><li><a href=\"/de/docs/Web/Security/Practical_implementation_guides/Turning_off_form_autocompletion\">Wie Sie die Formular-Autovervollständigung deaktivieren</a></li><li><a href=\"/de/docs/Web/Security/Practical_implementation_guides/Robots_txt\">robots.txt-Konfiguration</a></li></ol></li><li><a href=\"/de/docs/Web/Security/Same-origin_policy\">Same-Origin-Policy</a></li><li><a href=\"/de/docs/Web/Security/Weak_Signature_Algorithm\">Schwache Signaturalgorithmen</a></li><li><em><a href=\"/de/docs/Web/Security/Secure_Contexts\" aria-current=\"page\">Secure contexts</a><ol><li><a href=\"/de/docs/Web/Security/Secure_Contexts/features_restricted_to_secure_contexts\">Funktionen, die auf sichere Kontexte beschränkt sind</a></li></ol></em></li><li><a href=\"/de/docs/Web/Security/Subdomain_takeovers\">Subdomain-Übernahmen</a></li><li><a href=\"/de/docs/Web/Security/Subresource_Integrity\">Subresource Integrity</a></li><li><a href=\"/de/docs/Web/Security/Transport_Layer_Security\">Transport Layer Security</a></li><li><a href=\"/de/docs/Web/Security/Insecure_passwords\">Unsichere Passwörter</a></li><li><a href=\"/de/docs/Web/Security/Referer_header:_privacy_and_security_concerns\">`Referer` Header: Datenschutz- und Sicherheitsbedenken</a></li></ol>","source":{"folder":"de/web/security/secure_contexts","github_url":"https://github.com/mdn/translated-content-de/blob/main/files/de/web/security/secure_contexts/index.md","last_commit_url":"https://github.com/mdn/translated-content-de/commit/c531d97e2e29b89a9e4771998b9c9d1b859af1d8","filename":"index.md"},"summary":"Ein sicherer Kontext ist ein Window oder Worker, für den bestimmte Mindeststandards für Authentifizierung und Vertraulichkeit erfüllt sind. Viele Web-APIs und Funktionen sind nur in einem sicheren Kontext zugänglich. Das Hauptziel sicherer Kontexte ist es, MITM-Angreifer daran zu hindern, auf leistungsstarke APIs zuzugreifen, die das Opfer eines Angriffs weiter gefährden könnten.","title":"Secure contexts","toc":[{"text":"Warum sollten einige Funktionen eingeschränkt werden?","id":"warum_sollten_einige_funktionen_eingeschränkt_werden"},{"text":"Wann wird ein Kontext als sicher angesehen?","id":"wann_wird_ein_kontext_als_sicher_angesehen"},{"text":"Feature-Erkennung","id":"feature-erkennung"},{"text":"Spezifikationen","id":"spezifikationen"},{"text":"Siehe auch","id":"siehe_auch"}],"pageType":"guide"}}</script></body></html>