Design Considerations for Metadata Insertion, May 2017
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The IAB published RFC 7624 in response to several revelations of pervasive attacks on Internet communications. This document considers the implications of protocol designs that associate metadata with encrypted flows. In particular, it asserts that designs that share metadata only by explicit actions at the host are preferable to designs in which middleboxes insert metadata.
For the definition of Status, see RFC 2026.
For the definition of Stream, see RFC 8729.