Rename Invalid P3P Headers

  1. Install the Privacy Scanner Fiddler Classic add-on.

    Fiddler Classic will gain a new top-level menu named Privacy.

    Privacy menu

  2. Ensure Privacy > Enabled and Privacy > Rename P3P header if invalid are checked.

Now, if a session presents a P3P statement that is malformed, that P3P header will be renamed to Malformed-P3P to prevent the browser from interpreting it as the P3P 1.0 specification suggested (for example, ignoring the unknown tokens).

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