bk99.de entertain the web since 1997

RFC 6973: Considering privacy in internet protocols

Summary

RFC 6973 provides systematic guidance for spotting privacy consequences as early as protocol design. Privacy is an architectural property and not just a user interface option. Unintended linkability often comes from identifiers that stay stable for a long time.

Ideas

  • Identifiers can link activities across contexts.
  • Metadata reveals relationships even when content is encrypted.
  • Data minimisation reduces later opportunities for abuse.

Remarks

  • RFC 6973 is an informational document and not an Internet Standard.

Recommendations

  • Create a data flow and threat model early on.
  • Justify every identifier that is transmitted persistently.

References

Read the RFC at the RFC Editor

Search the Web Archive