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Hi all,</div>
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Here are the notes from Tuesday's meeting. They can be accessed <a href="https://hackmd.io/@oidf-wg-sse/wg-meeting-2024-04-30" id="LPlnk628359" title="https://hackmd.io/@oidf-wg-sse/wg-meeting-2024-04-30">
here</a> and all past notes can be found <a href="https://github.com/openid/sharedsignals/wiki/Meetings" id="LPlnk" title="https://github.com/openid/sharedsignals/wiki/Meetings">
here</a>.</div>
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WG Meeting: 2024-04-30</div>
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https://hackmd.io/@oidf-wg-sse/wg-meeting-20240416/edit</div>
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Agenda</div>
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Existing action items (0 min)</div>
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Continued discussion (5 min)</div>
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New topics (30 min)</div>
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Open PRs (10 min)</div>
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Recent issues (0 min)</div>
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Attendees</div>
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Please add yourself here or enter your name and organization in the chat.</div>
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Shayne Miel (Cisco)</div>
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Sean O'Dell (Disney)</div>
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Tim Cappalli (Okta)</div>
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Elizabeth Garber (OpenID)</div>
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Mohammad Pulak (IRS)</div>
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Apoorva Deshpande (Okta)</div>
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Jen Schreiber (Workday)</div>
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Todd Meyer (IRS)</div>
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Sean O'Neill (Easy Dynamics)</div>
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Jay Leslie (Easy Dynamics)</div>
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Tom Sato (VeriClouds)</div>
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Stan Bounev (VeriClouds)</div>
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Steve Venema (non-affiliated)</div>
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Existing action items</div>
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(Shayne) Add Yair to Slack - [DONE]</div>
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(Apoorva) Typographical PR - [DONE]</div>
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(Shayne) Look into Issue #66 to add well-known to IANA - [DONE]</div>
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(Atul, Shayne) Re-review PR #134 [OUTSTANDING]</div>
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(Yair) Create PR to fix issue #150 [OUTSTANDING]</div>
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(Sean) Use Cases inital pull / feedback from Stan [OUTSTANDING]</div>
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New topics</div>
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txn claim in SET (sean)</div>
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(Sean) Adding the txn claim helps implementers know what to add without having to follow links</div>
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(Sean) Comment on issue suggesting against it because it is already in SET spec</div>
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(Sean) We left it at "let's make a PR so we can discuss"</div>
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SCIM Events + SSF (sean)</div>
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(Sean) Phil wants to keep SCIM events as a separate thing</div>
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(Jen) Could go in SCIM use cases</div>
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(Sean) Mike, Nancy, etc getting on a call to work it out</div>
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(Jen) SCIM doesn't want to add something that is still in draft form</div>
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(Apoorva) This is the SCIM working group?</div>
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<a href="https://datatracker.ietf.org/doc/draft-ietf-scim-events/" id="LPlnk">https://datatracker.ietf.org/doc/draft-ietf-scim-events/</a></div>
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Clarify meaning of adding subjects (shayne)</div>
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(Tim) Assumption is that no events are served by default</div>
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(Shayne) Should we state this in the spec?</div>
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(Apoorva) Since add-subject/remove-subject is optional, Okta assumes all events are sent by default</div>
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(Apoorva) It is transmitter's choice to approve request to add subject</div>
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(Tim) Default open leaves a security hole</div>
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(Apoorva) Default open makes it easier to implement</div>
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(Tim) Why not just use a wild card</div>
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(Shayne) Complex Subject has wild card support</div>
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(Sean) Are large companies going to make the receiver ask for every subject?</div>
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(Sean) Classification of users</div>
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(Shayne) That's what wild cards does</div>
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(Tim) Old single-stream model was bound to the token which made it safer to default open</div>
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(Tim) We could maybe put it in the stream config. If not present, then expected that we default closed</div>
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(Apoorva) How does the multi-stream change things?</div>
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(Tim) Old model binds everything to the token.</div>
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(Apoorva) Authorization is separate from SSF spec</div>
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(Tim) Correct, but we need to authorize subjects differently</div>
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(Shayne) Same model as the way event types are subscribed to</div>
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(Apoorva) We have already kept the federated relationship outside the spec</div>
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(Shayne) We are discussing the interpretation of the existing spec, not a new feature</div>
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(Jen) What is the decision we are trying to make?</div>
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(Tim) Decision is: Should a Transmitter whose Receiver has not explicitly requested subjects start sending events for all subjects by default?</div>
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(Apoorva) What about SCIM? How do they handle it?</div>
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(Sean) It's use case dependent</div>
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(Sean) By default SCIM is closed</div>
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(Sean) Is this an interop spec question?</div>
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(Apoorva) I would vote for it being addressed in the SSF spec since it is the definition of how the stream works</div>
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(Stan) From a practical point of view, Receiver might want to get all subjects or subset. Is there a way to allow that?</div>
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(Shayne) We've talked about Complex Subjects allowing wildcard like behavior.</div>
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(Tim) Essentially, the claims act like wild cards if you don't define them</div>
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(Sean) How does the receiver know the tenant values to "ask for"?</div>
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subject: {</div>
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format: complex</div>
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}</div>
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(Stan) If Receiver wants to get all events from a single domain. Can we do "*@acme.com"?</div>
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(Shayne) I don't think that ability exists</div>
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(Sean) It is on the Transmitter to define the logic that a specific tenant/account relates to a specific domain</div>
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(Apoorva) There is no way to validate that the Transmitter is sending the right thing</div>
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(Shayne) We intentionally left out "list subjects" for security reasons</div>
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(Steve) The flip side is that it fails silently, because the Receiver can't verify whether a subject is in a stream</div>
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(Steve) It seems like we might want some way to confirm whether a subject is in the stream</div>
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(Sean) We've never talked about splitting event types by subject, correct?</div>
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(Shayne) Correct. If you want that, set up multiple streams</div>
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<span style="color: rgb(51, 51, 51);"><b>Shayne Miel</b> </span><span style="color: rgb(153, 153, 153);">/</span><span style="color: rgb(51, 51, 51);"> Principal Engineer (he, him, his)
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</span><span style="color: rgb(23, 78, 134);"><a href="mailto:smiel@cisco.com" style="color: rgb(23, 78, 134);" data-loopstyle="linkonly" id="OWA282b273e-b732-998e-4af4-751b7fdb9ab3" class="OWAAutoLink">smiel@cisco.com</a></span><span style="color: rgb(51, 51, 51);">
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(919) 923-6230 <br>
</span><span style="color: rgb(23, 78, 134);"><a href="https://www.cisco.com/site/us/en/products/security/index.html" title="https://www.cisco.com/site/us/en/products/security/index.html" style="color: rgb(23, 78, 134);" data-loopstyle="linkonly" id="OWA59a4a101-1b36-0397-664e-3922c8d2f910" class="OWAAutoLink">cisco.com</a></span></div>
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