Re: [dmarc-ietf] Ticket #64 - Contained Data PII Concerns

Alessandro Vesely <> Mon, 15 February 2021 13:31 UTC

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Date: Mon, 15 Feb 2021 14:30:57 +0100
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Subject: Re: [dmarc-ietf] Ticket #64 - Contained Data PII Concerns
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On Fri 12/Feb/2021 21:30:38 +0100 Brotman, Alex wrote:
> Hello folks,
> In ticket #64 (, it was suggested that a Privacy Considerations section may alleviate some concerns about the ownership of the data.  I created an initial attempt, and thought to get some feedback.  I didn't think we should go too far in depth, or raise corner cases.  Felt like doing so could lead down a rabbit hole of trying to cover all cases. This would go within a "Privacy Considerations" section.
> * Data Contained Within Reports (#64)
> Within the reports is contained an aggregated body of anonymized data pertaining
> to the sending domain.  The data is meant to aid the report processors
> and domain holders in verifying sources of messages pertaining to the
> 5322.From Domain.

I'd replace all those 5322.From Domain with main DMARC identifier.

> The data should not contain any identifying
> characteristics about individual senders or receivers.

The aggregated data refers to names and IP addresses of SMTP servers.  It 
cannot be used to identify individual users.

>  An entity
> sending reports should not be concerned with the data contained as
> it should not contain PII (NIST reference for PII definition), such as email addresses or
> usernames.

I'd substitute /should not/does not/.  Even if a server has a unique user, the 
domain name and the IP address are those of a public entity, not those of a 
private citizen.

The term Personally Identifiable Information (PII) is US-national.  I think 
just personal information is of broader use.  Personal data is also a valid