5. Security Considerations

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Original RFC Text

5.  Security Considerations

   This mechanism allows resources that share an origin to invalidate
   each other.  Because of this, origins that represent multiple parties
   (sometimes referred to as "shared hosting") might allow one party to
   group its resources with those of others or to send signals that have
   side effects upon them.

   Shared hosts that wish to mitigate these risks can control access to
   the header fields defined in this specification.