X-Frame-Options (contre le click-jacking, RFC 7034, 2013-10) ¶
See also

Définition Mozilla ¶
The X-Frame-Options HTTP response header can be used to indicate whether or not a browser should be allowed to render a page in a <frame>, <iframe> or <object> .
Sites can use this to avoid clickjacking attacks, by ensuring that their content is not embedded into other sites.
Solution Django ¶
MIDDLEWARE = [
'django.middleware.clickjacking.XFrameOptionsMiddleware',
]
This defaults to SAMEORIGIN.
To set DENY:
X_FRAME_OPTIONS = 'DENY'