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Shepherd writeup


Yoav Nir is the Document Shepherd. Barry Leiba is the Responsible 
Area Director.

This informational document serves to document the existing use and 
specification of this X-Frame-Options HTTP response header field.

To improve the protection of web applications against Clickjacking, 
this specification describes the X-Frame-Options HTTP response 
header field that declares a policy communicated from the server to 
the client browser on whether the browser may display the transmitted 
content in frames that are part of other web pages.  

Review and Consensus

In 2009 and 2010 many browser vendors introduced the use of a non-
standard HTTP header field "X-Frame-Options" to protect against 
Clickjacking. There have been differences between the various 
implementations which may cause security and interoperability 
concerns. This draft has been produced as informational by the websec 
working group to document the current use and also to function as a 
baseline for the future unified standard as part of the currently 
produced Content Security Policy 1.1 (by WebAppSec at the W3C) - and 
to get rid of the deprecated "X-" (see RFC6648). 
The review process took sufficient time and involved a medium amount 
of people with deep browser security knowledge. During the review 
process no major controversies came up, which is not too surprising 
as the draft is intended as informational and documenting. 

Intellectual Property 

Each author has confirmed conformance with BCPs 78 and 79.
Tobias confirmed. David has also confirmed. 

Other Points