I think aspects of this should be fixed in the standards. Firefox should definitely fix it. Make it readonly or even non-readable by default when the child doma

I think aspects of this should be fixed in the standards. Firefox should definitely fix it. Make it readonly or even non-readable by default when the child domain is different to parent. Have the parent decide. Security issues need secure solutions, right? I don't actually see the utility in allowing open access from child page to parent page, especially when cross-server is a factor. There are similar other issues that have been closed. Why not this one?