====== Security Headers ======

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| X-Frame-Options            | [[https://tools.ietf.org/html/rfc7034|RFC 7034]] (2013) \\ <wrap lo>[[https://blogs.msdn.microsoft.com/ieinternals/2010/03/30/combating-clickjacking-with-x-frame-options/|Microsoft]] (2009)</wrap>             || [[https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/X-Frame-Options|Moz]]                                                                                   | (V)\\ <wrap lo>Die durch Server o. Client dynamisch sind</wrap>  | %%(%%(V)%%)%% ((Macht wenig Sinn))                                                          | ''DENY''\\ <wrap lo>''SAMEORIGIN''</wrap>                                                                         | App -> View -> Immer                           | (V)\\ <wrap lo>Für Webseite</wrap>                              | Ersetzt durch `Frame-Options` in CSP\\ Meta-Tags funktionieren nicht [(https://github.com/OWASP/CheatSheetSeries/blob/master/cheatsheets/Clickjacking_Defense_Cheat_Sheet.md#common-defense-mistakes)]  |
| Strict-Transport-Security  | [[https://tools.ietf.org/html/rfc6797|RFC 6797]] (2012)                                                                                                                                                          || [[https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Strict-Transport-Security|Moz]]                                                                         | (V)                                                              | (V)                                                                                         | ''max-age=31536000; includeSubDomains;''\\ (!) ''includeSubDomains'' nicht, wenn Büronetz mit HTTP-only Geräten.  | SSL Endpunkt -> Immer                          | %%(%%(X)%%)%%\\ <wrap lo>Nicht nötig, machen preloading</wrap>  |                                                                                                                                                                                                         |
| Referrer-Policy            |  [[https://www.w3.org/TR/referrer-policy/|w3]] (2017)                                                                                                                                                            || [[https://scotthelme.co.uk/a-new-security-header-referrer-policy/|Scott Helme]], [[https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Referrer-Policy|Moz]]  | (V)                                                              | CSS                                                                                         | ''no-referrer''\\ ''strict-origin''                                                                               | App -> View -> Immer\\ Server -> CSS -> Immer  | (X)                                                             | Veraltet in CSP                                                                                                                                                                                         |
| X-Content-Type-Options     | [[https://blogs.msdn.microsoft.com/ie/2008/09/02/ie8-security-part-vi-beta-2-update/|Microsoft]] (2008)                                                                                               |           | [[https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/X-Content-Type-Options|Moz]]                                                                            | (V)                                                              | (V)\\ <wrap lo>[[https://github.com/whatwg/fetch/issues/395|Probleme mit Bildern?]]</wrap>  | ''no-sniff''                                                                                                      |                                                | %%(%%(V)%%)%%\\ Für Resourcen                                   |                                                                                                                                                                                                         |