An access token may end up in the browser history if a client or a web site that already has a token deliberately navigates to a page like provider.com/get_user_profile?access_token=abcdef.
OAuth 2.0 Security Best Current Practice (draft 25) (SecBCP, section 4.3.2)
This threat is considered fully mitigated if all the test cases from the following test set succeed.
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