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
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