[Rails] Re: forgery protection for multiple browser tabs

In some situations a new session was created because the user was logging in/out. Could I copy the old CSRF-token into the new session, or would there be any security leak?

In other cases the user was not logging in/out and didn't get a new session. Maybe the page was cached in the browser, so I added in my layout <META HTTP-EQUIV="CACHE-CONTROL" CONTENT="NO-CACHE"> now.

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