Let websites framebust out of native apps (via) Adrian Holovaty makes a compelling case that it is Not OK that we allow native mobile apps to embed our websites in their own browsers, including the ability for them to modify and intercept those pages (it turned out today that Instagram injects extra JavaScript into pages loaded within the Instagram in-app browser). He compares this to frame-busting on the regular web, and proposes that the X-Frame-Options: DENY header which browsers support to prevent a page from being framed should be upgraded to apply to native embedded browsers as well.
I’m not convinced that reusing X-Frame-Options: DENY would be the best approach—I think it would break too many existing legitimate uses—but a similar option (or a similar header) specifically for native apps which causes pages to load in the native OS browser instead sounds like a fantastic idea to me.
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