<div dir="ltr"><span id="gmail-docs-internal-guid-4a0dd4cb-7fff-b865-bae0-a726c959aa51"><p dir="ltr" style="line-height:1.38;margin-top:0pt;margin-bottom:0pt"><span style="font-family:Arial,sans-serif;color:rgb(0,0,0);background-color:transparent;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;vertical-align:baseline">Hi Roman,</span></p><br><p dir="ltr" style="line-height:1.38;margin-top:0pt;margin-bottom:0pt"><span style="font-family:Arial,sans-serif;color:rgb(0,0,0);background-color:transparent;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;vertical-align:baseline">Thank you for highlighting the Princeton Open MPIC Project, which we introduced in the preamble of SC-067 Version 1 [1]. While we appreciate your (and others) perspective, this ballot intends to close an open vulnerability that was presented at F2F 58 (February 28, 2023), and as I understand it, discussed within the Server Certificate Working Group before that time.</span></p><br><p dir="ltr" style="line-height:1.38;margin-top:0pt;margin-bottom:0pt"><span style="font-family:Arial,sans-serif;color:rgb(0,0,0);background-color:transparent;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;vertical-align:baseline">There are multiple approaches to implementing MPIC in a manner that satisfies the requirements described in this ballot. The Princeton API [2] is just one example. We also see an API [3] available from Cloudflare, and earlier ballot discussion highlighted VPNs [4] could also be used in lieu of standing up remote cloud server instances. The ballot was subsequently updated [5] to make the permitted use of VPNs clear. </span></p><br><p dir="ltr" style="line-height:1.38;margin-top:0pt;margin-bottom:0pt"><span style="font-family:Arial,sans-serif;color:rgb(0,0,0);background-color:transparent;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;vertical-align:baseline">Beyond this, I’m unaware of other ballots passed in recent history that have gone to such lengths to ensure ease of community adoption, especially ones intended at introducing meaningful security improvements in response to a demonstrated and ongoing vulnerability. This approach has included delaying the Effective Dates described in earlier proposals [6, slide 37], and also adopting a phased approach that strengthens over time to allow CA Owners a reasonable amount of flexibility and time for them to fine-tune implementations before blocking action becomes normative [6, slide 38]. </span></p><br><p dir="ltr" style="line-height:1.38;margin-top:0pt;margin-bottom:0pt"><span style="font-family:Arial,sans-serif;color:rgb(0,0,0);background-color:transparent;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;vertical-align:baseline">Just as was discussed in messages [7][8][9] related to third-party linting tools, delaying the adoption of an important security function because of a dependency on a voluntary contribution by a third-party who is not a Forum participant is a path that must be avoided. </span></p><br><p dir="ltr" style="line-height:1.38;margin-top:0pt;margin-bottom:0pt"><span style="font-family:Arial,sans-serif;color:rgb(0,0,0);background-color:transparent;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;vertical-align:baseline">Regardless of the above, we’ve checked with the Princeton researchers and they have indicated:</span></p><ul style="margin-top:0px;margin-bottom:0px"><li dir="ltr" style="list-style-type:disc;font-family:Arial,sans-serif;color:rgb(0,0,0);background-color:transparent;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;vertical-align:baseline;white-space:pre"><p dir="ltr" style="line-height:1.38;margin-top:0pt;margin-bottom:0pt" role="presentation"><span style="background-color:transparent;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;vertical-align:baseline">they expect the current API specification [2] to be implemented by September 2024. The ballot describes the first “MUST" implementation date as March 15, 2025 [10]. I’ll note this “MUST" effective date is intentionally “soft”, as CAs can use their discretion as to whether MPIC responses block issuance. The “hard" block requirement takes effect September 15, 2025.</span></p></li><li dir="ltr" style="list-style-type:disc;font-family:Arial,sans-serif;color:rgb(0,0,0);background-color:transparent;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;vertical-align:baseline;white-space:pre"><p dir="ltr" style="line-height:1.38;margin-top:0pt;margin-bottom:0pt" role="presentation"><span style="background-color:transparent;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;vertical-align:baseline">they are expected to upload a functional prototype to GitHub this week.</span></p></li><li dir="ltr" style="list-style-type:disc;font-family:Arial,sans-serif;color:rgb(0,0,0);background-color:transparent;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;vertical-align:baseline;white-space:pre"><p dir="ltr" style="line-height:1.38;margin-top:0pt;margin-bottom:0pt" role="presentation"><span style="background-color:transparent;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;vertical-align:baseline">only 4 CA Owners have joined the Open MPIC Project mailing list [11]. </span></p></li></ul><br><p dir="ltr" style="line-height:1.38;margin-top:0pt;margin-bottom:0pt"><span style="font-family:Arial,sans-serif;color:rgb(0,0,0);background-color:transparent;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;vertical-align:baseline">Related to the Open MPIC Project mailing list, I was surprised at such low participation and interest in collaboration given (1) the perceived community reaction to Henry’s presentation at F2F 58 and following discussions and (2) how long we’ve been discussing MPIC within the Validation Subcommittee and broader SCWG. Beyond the points earlier about the risk and precedent of delaying adoption of a security function as a result of a voluntary third-party contribution, it’s difficult to reason this limited community participation as a motivating factor for delaying the ballot, which should be instead interpreted as helping close an open Web PKI vulnerability, as a result of the project’s progress.</span></p><br><p dir="ltr" style="line-height:1.38;margin-top:0pt;margin-bottom:0pt"><span style="font-family:Arial,sans-serif;color:rgb(0,0,0);background-color:transparent;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;vertical-align:baseline">Thanks,</span></p><p dir="ltr" style="line-height:1.38;margin-top:0pt;margin-bottom:0pt"><span style="font-family:Arial,sans-serif;color:rgb(0,0,0);background-color:transparent;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;vertical-align:baseline">Ryan</span></p></span><br class="gmail-Apple-interchange-newline"><div><span id="gmail-docs-internal-guid-6feaa294-7fff-4fea-3c99-43ffeed12867"><p dir="ltr" style="line-height:1.38;margin-top:0pt;margin-bottom:0pt"><span style="font-family:Arial,sans-serif;color:rgb(0,0,0);background-color:transparent;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;vertical-align:baseline">References: </span></p><p dir="ltr" style="line-height:1.38;margin-top:0pt;margin-bottom:0pt"><span style="font-family:Arial,sans-serif;color:rgb(0,0,0);background-color:transparent;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;vertical-align:baseline">[1] </span><a href="https://github.com/cabforum/servercert/pull/487" style="text-decoration-line:none"><span style="font-family:Arial,sans-serif;background-color:transparent;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;text-decoration-line:underline;vertical-align:baseline">https://github.com/cabforum/servercert/pull/487</span></a><span style="font-family:Arial,sans-serif;color:rgb(0,0,0);background-color:transparent;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;vertical-align:baseline"> </span></p><p dir="ltr" style="line-height:1.38;margin-top:0pt;margin-bottom:0pt"><span style="font-family:Arial,sans-serif;color:rgb(0,0,0);background-color:transparent;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;vertical-align:baseline">[2] </span><a href="https://github.com/open-mpic/open-mpic-specification" style="text-decoration-line:none"><span style="font-family:Arial,sans-serif;background-color:transparent;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;text-decoration-line:underline;vertical-align:baseline">https://github.com/open-mpic/open-mpic-specification</span></a><span style="font-family:Arial,sans-serif;color:rgb(0,0,0);background-color:transparent;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;vertical-align:baseline"> </span></p><p dir="ltr" style="line-height:1.38;margin-top:0pt;margin-bottom:0pt"><span style="font-family:Arial,sans-serif;color:rgb(0,0,0);background-color:transparent;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;vertical-align:baseline">[3] </span><a href="https://docs.google.com/document/d/19wvjk7lcK1TCQpJrjEljosTEe8A0We1ayRp_1Ou3r4s/edit#heading=h.9kf5j5tsn6i7" style="text-decoration-line:none"><span style="font-family:Arial,sans-serif;background-color:transparent;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;text-decoration-line:underline;vertical-align:baseline">https://docs.google.com/document/d/19wvjk7lcK1TCQpJrjEljosTEe8A0We1ayRp_1Ou3r4s/edit#heading=h.9kf5j5tsn6i7</span></a></p><p dir="ltr" style="line-height:1.38;margin-top:0pt;margin-bottom:0pt"><span style="font-family:Arial,sans-serif;color:rgb(0,0,0);background-color:transparent;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;vertical-align:baseline">[4] </span><a href="https://github.com/cabforum/servercert/pull/487#discussion_r1557725687" style="text-decoration-line:none"><span style="font-family:Arial,sans-serif;background-color:transparent;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;text-decoration-line:underline;vertical-align:baseline">https://github.com/cabforum/servercert/pull/487#discussion_r1557725687</span></a><span style="font-family:Arial,sans-serif;color:rgb(0,0,0);background-color:transparent;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;vertical-align:baseline"> </span></p><p dir="ltr" style="line-height:1.38;margin-top:0pt;margin-bottom:0pt"><span style="font-family:Arial,sans-serif;color:rgb(0,0,0);background-color:transparent;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;vertical-align:baseline">[5] </span><a href="https://github.com/cabforum/servercert/pull/507/commits/01b3f1d9fa361d0dc568cf5a2713e6f39abb7438#diff-e0ac1bd190515a4f2ec09139d395ef6a8c7e9e5b612957c1f5a2dea80c6a6cfeR389" style="text-decoration-line:none"><span style="font-family:Arial,sans-serif;background-color:transparent;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;text-decoration-line:underline;vertical-align:baseline">https://github.com/cabforum/servercert/pull/507/commits/01b3f1d9fa361d0dc568cf5a2713e6f39abb7438#diff-e0ac1bd190515a4f2ec09139d395ef6a8c7e9e5b612957c1f5a2dea80c6a6cfeR389</span></a><span style="font-family:Arial,sans-serif;color:rgb(0,0,0);background-color:transparent;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;vertical-align:baseline"> </span></p><p dir="ltr" style="line-height:1.38;margin-top:0pt;margin-bottom:0pt"><span style="font-family:Arial,sans-serif;color:rgb(0,0,0);background-color:transparent;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;vertical-align:baseline">[6] </span><a href="https://drive.google.com/file/d/1LTwtAwHXcSaPVSsqKQztNJrV2ozHJ7ZL/view" style="text-decoration-line:none"><span style="font-family:Arial,sans-serif;background-color:transparent;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;text-decoration-line:underline;vertical-align:baseline">https://drive.google.com/file/d/1LTwtAwHXcSaPVSsqKQztNJrV2ozHJ7ZL/view</span></a><span style="font-family:Arial,sans-serif;color:rgb(0,0,0);background-color:transparent;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;vertical-align:baseline"> </span></p><p dir="ltr" style="line-height:1.38;margin-top:0pt;margin-bottom:0pt"><span style="font-family:Arial,sans-serif;color:rgb(0,0,0);background-color:transparent;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;vertical-align:baseline">[7] </span><a href="https://archive.cabforum.org/pipermail/servercert-wg/2024-April/004411.html" style="text-decoration-line:none"><span style="font-family:Arial,sans-serif;background-color:transparent;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;text-decoration-line:underline;vertical-align:baseline">https://archive.cabforum.org/pipermail/servercert-wg/2024-April/004411.html</span></a></p><p dir="ltr" style="line-height:1.38;margin-top:0pt;margin-bottom:0pt"><span style="font-family:Arial,sans-serif;color:rgb(0,0,0);background-color:transparent;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;vertical-align:baseline">[8] </span><a href="https://archive.cabforum.org/pipermail/servercert-wg/2024-April/004417.html" style="text-decoration-line:none"><span style="font-family:Arial,sans-serif;background-color:transparent;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;text-decoration-line:underline;vertical-align:baseline">https://archive.cabforum.org/pipermail/servercert-wg/2024-April/004417.html</span></a><span style="font-family:Arial,sans-serif;color:rgb(0,0,0);background-color:transparent;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;vertical-align:baseline"> </span></p><p dir="ltr" style="line-height:1.38;margin-top:0pt;margin-bottom:0pt"><span style="font-family:Arial,sans-serif;color:rgb(0,0,0);background-color:transparent;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;vertical-align:baseline">[9] </span><a href="https://archive.cabforum.org/pipermail/servercert-wg/2024-May/004614.html" style="text-decoration-line:none"><span style="font-family:Arial,sans-serif;background-color:transparent;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;text-decoration-line:underline;vertical-align:baseline">https://archive.cabforum.org/pipermail/servercert-wg/2024-May/004614.html</span></a><span style="font-family:Arial,sans-serif;color:rgb(0,0,0);background-color:transparent;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;vertical-align:baseline"> </span></p><p dir="ltr" style="line-height:1.38;margin-top:0pt;margin-bottom:0pt"><span style="font-family:Arial,sans-serif;color:rgb(0,0,0);background-color:transparent;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;vertical-align:baseline">[10] </span><a href="https://github.com/cabforum/servercert/pull/517/files#diff-e0ac1bd190515a4f2ec09139d395ef6a8c7e9e5b612957c1f5a2dea80c6a6cfeR1110" style="text-decoration-line:none"><span style="font-family:Arial,sans-serif;background-color:transparent;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;text-decoration-line:underline;vertical-align:baseline">https://github.com/cabforum/servercert/pull/517/files#diff-e0ac1bd190515a4f2ec09139d395ef6a8c7e9e5b612957c1f5a2dea80c6a6cfeR1110</span></a><span style="font-family:Arial,sans-serif;color:rgb(0,0,0);background-color:transparent;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;vertical-align:baseline"> </span></p><p dir="ltr" style="line-height:1.38;margin-top:0pt;margin-bottom:0pt"><span style="font-family:Arial,sans-serif;color:rgb(0,0,0);background-color:transparent;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;vertical-align:baseline">[11] </span><a href="https://lists.princeton.edu/cgi-bin/wa?A0=OPEN-MPIC" style="text-decoration-line:none"><span style="font-family:Arial,sans-serif;background-color:transparent;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;text-decoration-line:underline;vertical-align:baseline">https://lists.princeton.edu/cgi-bin/wa?A0=OPEN-MPIC</span></a><span style="font-family:Arial,sans-serif;color:rgb(0,0,0);background-color:transparent;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;vertical-align:baseline"> </span></p></span><br class="gmail-Apple-interchange-newline"></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, Jun 4, 2024 at 3:47 AM Roman Fischer via Servercert-wg <<a href="mailto:servercert-wg@cabforum.org">servercert-wg@cabforum.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div class="msg-5169377640873654436">





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<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif">Dear all,<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11pt;font-family:Calibri,sans-serif">I was informed by direct mail about the following which I find very interesting and wanted to share here:<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11pt;font-family:Calibri,sans-serif"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">Princeton researchers are working on an open source implementation of MPIC and are looking for collaborators: </span><a href="https://freedom-to-tinker.com/2024/02/13/announcing-the-open-multi-perspective-issuance-corroboration-project/" target="_blank"><span lang="EN-US">https://freedom-to-tinker.com/2024/02/13/announcing-the-open-multi-perspective-issuance-corroboration-project/</span></a><span lang="EN-US">.
 The first version of the API specification is on </span><a href="https://github.com/open-mpic/open-mpic-specification/tree/main" target="_blank"><span lang="EN-US">github</span></a><span lang="EN-US">.<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11pt;font-family:Calibri,sans-serif"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11pt;font-family:Calibri,sans-serif">As these developments seem to be in an early stage, wouldn’t it make sense to postpone this ballot until at least a first draft of this open source implementation
 is available? I don’t think it makes sense that each CA invents their own protocols and possibly makes avoidable mistakes coding / implementing this non-trivial topic..<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11pt;font-family:Calibri,sans-serif"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11pt;font-family:Calibri,sans-serif">Kind regards<br>
Roman<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11pt;font-family:Calibri,sans-serif"><u></u> <u></u></span></p>
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<p class="MsoNormal"><b><span lang="EN-US" style="font-size:11pt;font-family:Calibri,sans-serif">From:</span></b><span lang="EN-US" style="font-size:11pt;font-family:Calibri,sans-serif"> Servercert-wg <<a href="mailto:servercert-wg-bounces@cabforum.org" target="_blank">servercert-wg-bounces@cabforum.org</a>>
<b>On Behalf Of </b>Chris Clements via Servercert-wg<br>
<b>Sent:</b> Montag, 20. Mai 2024 16:30<br>
<b>To:</b> CA/B Forum Server Certificate WG Public Discussion List <<a href="mailto:servercert-wg@cabforum.org" target="_blank">servercert-wg@cabforum.org</a>><br>
<b>Subject:</b> [Servercert-wg] Discussion Period Begins - Ballot SC-067 V3: "Require domain validation and CAA checks to be performed from multiple Network Perspectives"<u></u><u></u></span></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p style="margin:0cm"><b><span style="font-family:Arial,sans-serif;color:rgb(14,16,26)">Purpose of Ballot SC-067 V3</span></b><span style="font-family:Arial,sans-serif;color:rgb(14,16,26)">:</span><u></u><u></u></p>
<p style="margin:0cm"><span style="font-family:Arial,sans-serif;color:rgb(80,0,80)"> </span><u></u><u></u></p>
<p style="margin:0cm"><span style="font-family:Arial,sans-serif;color:rgb(14,16,26)">This Ballot proposes updates to the
<i>Baseline Requirements for the Issuance and Management of Publicly-Trusted TLS Server Certificates</i> (i.e., TLS BRs) related to “Multi-Perspective Issuance Corroboration” (“MPIC”).</span><u></u><u></u></p>
<p style="margin:0cm"><span style="font-family:Arial,sans-serif;color:rgb(80,0,80)"> </span><u></u><u></u></p>
<p style="margin:0cm"><b><span style="font-family:Arial,sans-serif;color:rgb(14,16,26)">Background</span></b><span style="font-family:Arial,sans-serif;color:rgb(14,16,26)">:</span><u></u><u></u></p>
<p style="margin:0cm"><span style="font-family:Arial,sans-serif;color:rgb(80,0,80)"> </span><u></u><u></u></p>
<p style="margin:0cm"><span style="font-family:Arial,sans-serif;color:rgb(14,16,26)">- MPIC refers to performing domain validation and CAA checks from multiple Network Perspectives before certificate issuance, as described within the Ballot for the applicable validation
 methods in TLS BR Sections 3.2.2.4 and 3.2.2.5.</span><u></u><u></u></p>
<p style="margin:0cm"><span style="font-family:Arial,sans-serif;color:rgb(14,16,26)">- Not all methods described in TLS BR Sections 3.2.2.4 and 3.2.2.5 will require using MPIC.</span><u></u><u></u></p>
<p style="margin:0cm"><span style="font-family:Arial,sans-serif;color:rgb(14,16,26)">- This work was most recently motivated by research presented at Face-to-Face 58 [1] by Princeton University, but has been discussed for years prior as well.</span><u></u><u></u></p>
<p style="margin:0cm"><span style="font-family:Arial,sans-serif;color:rgb(14,16,26)">- The goal of this proposal is to make it more difficult for adversaries to successfully launch equally-specific prefix attacks against the domain validation processes described
 in the TLS BRs.</span><u></u><u></u></p>
<p style="margin:0cm"><span style="font-family:Arial,sans-serif;color:rgb(14,16,26)">- Additional background information can be found in an update shared at Face-to-Face 60 [2].</span><u></u><u></u></p>
<p style="margin:0cm"><span style="font-family:Arial,sans-serif;color:rgb(80,0,80)"> </span><u></u><u></u></p>
<p style="margin:0cm"><b><span style="font-family:Arial,sans-serif;color:rgb(14,16,26)">Benefits of Adoption</span></b><span style="font-family:Arial,sans-serif;color:rgb(14,16,26)">:</span><u></u><u></u></p>
<p style="margin:0cm"><span style="font-family:Arial,sans-serif;color:rgb(80,0,80)"> </span><u></u><u></u></p>
<p style="margin:0cm"><span style="font-family:Arial,sans-serif;color:rgb(14,16,26)">- Recent publicly-documented attacks have used BGP hijacks to fool domain control validation and obtain malicious certificates, which led to the impersonation of HTTPS websites
 [3][</span><span style="font-family:Arial,sans-serif;color:black">4</span><span style="font-family:Arial,sans-serif;color:rgb(14,16,26)">].</span><u></u><u></u></p>
<p style="margin:0cm"><span style="font-family:Arial,sans-serif;color:rgb(14,16,26)">- Routing security defenses (e.g., RPKI) can mitigate the risk of global BGP attacks, but localized, equally-specific BGP attacks still pose a significant threat to the Web PKI
 [5][6].</span><u></u><u></u></p>
<p style="margin:0cm"><span style="font-family:Arial,sans-serif;color:rgb(14,16,26)">- Corroborating domain control validation checks from multiple network perspectives (i.e., MPIC) spread across the Internet substantially reduces the threat posed by equally-specific
 BGP attacks, ensuring the integrity of domain validation and issuance decisions [5][7][8].</span><u></u><u></u></p>
<p style="margin:0cm"><span style="font-family:Arial,sans-serif;color:rgb(14,16,26)">- Existing deployments of MPIC at the scale of millions of certificates a day demonstrate the feasibility of this technique at Internet scale [7][9].</span><u></u><u></u></p>
<p style="margin:0cm"><span style="font-family:Arial,sans-serif;color:rgb(80,0,80)"> </span><u></u><u></u></p>
<p style="margin:0cm"><b><span style="font-family:Arial,sans-serif;color:rgb(14,16,26)">Intellectual Property (IP) Disclosure</span></b><span style="font-family:Arial,sans-serif;color:rgb(14,16,26)">:</span><u></u><u></u></p>
<p style="margin:0cm"><span style="font-family:Arial,sans-serif;color:rgb(80,0,80)"> </span><u></u><u></u></p>
<p style="margin:0cm"><span style="font-family:Arial,sans-serif;color:rgb(14,16,26)">- While not a Server Certificate Working Group Member, researchers from Princeton University presented at Face-to-Face 58, provided academic expertise, and highlighted publicly-available
 peer-reviewed research to support Members in drafting this ballot.</span><u></u><u></u></p>
<p style="margin:0cm"><span style="font-family:Arial,sans-serif;color:rgb(14,16,26)">- The Princeton University researchers indicate that they have not filed for any patents relating to their MPIC work and do not plan to do so in the future.</span><u></u><u></u></p>
<p style="margin:0cm"><span style="font-family:Arial,sans-serif;color:rgb(14,16,26)">- Princeton University has indicated that it is unable to agree to the CA/Browser Forum IPR agreement because it could encumber inventions invented by researchers not involved
 in the development of MPIC or with the CA/B Forum.</span><u></u><u></u></p>
<p style="margin:0cm"><span style="font-family:Arial,sans-serif;color:rgb(14,16,26)">- Princeton University has instead provided the attached IPR statement. Pursuant to the IPR statement, Princeton University has granted a worldwide royalty free license to the
 intellectual property in MPIC developed by the researchers and has made representations regarding its lack of knowledge of any other Princeton intellectual property needed to implement MPIC.</span><u></u><u></u></p>
<p style="margin:0cm"><span style="font-family:Arial,sans-serif;color:rgb(14,16,26)">- The attached IPR statement has not changed since disclosed in Discussion Round 1.</span><u></u><u></u></p>
<p style="margin:0cm"><span style="font-family:Arial,sans-serif;color:black">- For clarity, Princeton University’s IPR statement is NOT intended to replace the Forum’s IPR agreement or allow Princeton to participate in the Forum in any capacity.</span><u></u><u></u></p>
<p style="margin:0cm"><span style="font-family:Arial,sans-serif;color:black">- Members seeking legal advice regarding this ballot should consult their own counsel.</span><u></u><u></u></p>
<p style="margin:0cm"><span style="font-family:Arial,sans-serif;color:rgb(80,0,80)"> </span><u></u><u></u></p>
<p style="margin:0cm"><b><span style="font-family:Arial,sans-serif;color:rgb(14,16,26)">Proposal Revision History</span></b><span style="font-family:Arial,sans-serif;color:rgb(14,16,26)">:</span><u></u><u></u></p>
<p style="margin:0cm"><span style="font-family:Arial,sans-serif;color:rgb(80,0,80)"> </span><u></u><u></u></p>
<p style="margin:0cm"><span style="font-family:Arial,sans-serif;color:rgb(14,16,26)">- Pre-Ballot Release #1 (work team artifacts and broader Validation Subcommittee collaboration) [10]</span><u></u><u></u></p>
<p style="margin:0cm"><span style="font-family:Arial,sans-serif;color:rgb(14,16,26)">- Pre-Ballot Release #2 [11]</span><u></u><u></u></p>
<p style="margin:0cm"><span style="font-family:Arial,sans-serif;color:rgb(80,0,80)"> </span><u></u><u></u></p>
<p style="margin:0cm"><b><span style="font-family:Arial,sans-serif;color:rgb(14,16,26)">Previous versions of this Ballot</span></b><span style="font-family:Arial,sans-serif;color:rgb(14,16,26)">:</span><u></u><u></u></p>
<p style="margin:0cm"><span style="font-family:Arial,sans-serif;color:rgb(80,0,80)">-</span><span style="font-family:Arial,sans-serif;color:rgb(14,16,26)"> Ballot Release #1 [12] (comparing Version 2 to Version 1) [13]. Note, some of the changes represented in the
 comparison are updates made by other ballots that have since passed (e.g., SC-069).</span><u></u><u></u></p>
<p style="margin:0cm"><span style="font-family:Arial,sans-serif;color:rgb(14,16,26)">- Ballot Release #2 [14] (comparing Version 3 to Version 2) [15]. Note, some of the changes represented in the comparison are updates made by other ballots that have since passed
 (e.g., SC-072).</span><u></u><u></u></p>
<p style="margin:0cm"><span style="font-family:Arial,sans-serif;color:rgb(80,0,80)"> </span><u></u><u></u></p>
<p style="margin:0cm"><b><span style="font-family:Arial,sans-serif;color:rgb(14,16,26)">References</span></b><span style="font-family:Arial,sans-serif;color:rgb(14,16,26)">:</span><u></u><u></u></p>
<p style="margin:0cm"><span style="font-family:Arial,sans-serif;color:rgb(14,16,26)">[1]
</span><a href="https://cabforum.org/wp-content/uploads/13-CAB-Forum-face-to-face-multiple-vantage-points.pdf" target="_blank"><span style="font-family:Arial,sans-serif">https://cabforum.org/wp-content/uploads/13-CAB-Forum-face-to-face-multiple-vantage-points.pdf</span></a><u></u><u></u></p>
<p style="margin:0cm"><span style="font-family:Arial,sans-serif;color:rgb(14,16,26)">[2]
</span><a href="https://drive.google.com/file/d/1LTwtAwHXcSaPVSsqKQztNJrV2ozHJ7ZL/view?usp=drive_link" target="_blank"><span style="font-family:Arial,sans-serif">https://drive.google.com/file/d/1LTwtAwHXcSaPVSsqKQztNJrV2ozHJ7ZL/view?usp=drive_link</span></a><span style="font-family:Arial,sans-serif;color:rgb(14,16,26)"> </span><u></u><u></u></p>
<p style="margin:0cm"><span style="font-family:Arial,sans-serif;color:rgb(14,16,26)">[3]
</span><a href="https://medium.com/s2wblog/post-mortem-of-klayswap-incident-through-bgp-hijacking-en-3ed7e33de600" target="_blank"><span style="font-family:Arial,sans-serif">https://medium.com/s2wblog/post-mortem-of-klayswap-incident-through-bgp-hijacking-en-3ed7e33de600</span></a><span style="font-family:Arial,sans-serif;color:rgb(14,16,26)"> </span><u></u><u></u></p>
<p style="margin:0cm"><span style="font-family:Arial,sans-serif;color:rgb(14,16,26)">[4]
</span><a href="https://www.coinbase.com/blog/celer-bridge-incident-analysis" target="_blank"><span style="font-family:Arial,sans-serif">https://www.coinbase.com/blog/celer-bridge-incident-analysis</span></a><span style="font-family:Arial,sans-serif;color:rgb(14,16,26)"> </span><u></u><u></u></p>
<p style="margin:0cm"><span style="font-family:Arial,sans-serif;color:rgb(14,16,26)">[5]
</span><a href="https://www.usenix.org/conference/usenixsecurity23/presentation/cimaszewski" target="_blank"><span style="font-family:Arial,sans-serif">https://www.usenix.org/conference/usenixsecurity23/presentation/cimaszewski</span></a><span style="font-family:Arial,sans-serif;color:rgb(14,16,26)">  </span><u></u><u></u></p>
<p style="margin:0cm"><span style="font-family:Arial,sans-serif;color:rgb(14,16,26)">[6]
</span><a href="https://www.blackhat.com/docs/us-15/materials/us-15-Gavrichenkov-Breaking-HTTPS-With-BGP-Hijacking-wp.pdf" target="_blank"><span style="font-family:Arial,sans-serif">https://www.blackhat.com/docs/us-15/materials/us-15-Gavrichenkov-Breaking-HTTPS-With-BGP-Hijacking-wp.pdf</span></a><span style="font-family:Arial,sans-serif;color:rgb(14,16,26)"> </span><u></u><u></u></p>
<p style="margin:0cm"><span style="font-family:Arial,sans-serif;color:rgb(14,16,26)">[7]
</span><a href="https://www.usenix.org/conference/usenixsecurity21/presentation/birge-lee" target="_blank"><span style="font-family:Arial,sans-serif">https://www.usenix.org/conference/usenixsecurity21/presentation/birge-lee</span></a><span style="font-family:Arial,sans-serif;color:rgb(14,16,26)"> </span><u></u><u></u></p>
<p style="margin:0cm"><span style="font-family:Arial,sans-serif;color:rgb(14,16,26)">[8]
</span><a href="https://www.usenix.org/conference/usenixsecurity18/presentation/birge-lee" target="_blank"><span style="font-family:Arial,sans-serif">https://www.usenix.org/conference/usenixsecurity18/presentation/birge-lee</span></a><span style="font-family:Arial,sans-serif;color:rgb(14,16,26)"> </span><u></u><u></u></p>
<p style="margin:0cm"><span style="font-family:Arial,sans-serif;color:rgb(14,16,26)">[9]
</span><a href="https://security.googleblog.com/2023/05/google-trust-services-acme-api_0503894189.html" target="_blank"><span style="font-family:Arial,sans-serif">https://security.googleblog.com/2023/05/google-trust-services-acme-api_0503894189.html</span></a><span style="font-family:Arial,sans-serif;color:rgb(14,16,26)"> </span><u></u><u></u></p>
<p style="margin:0cm"><span style="font-family:Arial,sans-serif;color:rgb(14,16,26)">[10]
</span><a href="https://github.com/ryancdickson/staging/pull/6" target="_blank"><span style="font-family:Arial,sans-serif">https://github.com/ryancdickson/staging/pull/6</span></a><span style="font-family:Arial,sans-serif;color:rgb(14,16,26)"> </span><u></u><u></u></p>
<p style="margin:0cm"><span style="font-family:Arial,sans-serif;color:rgb(14,16,26)">[11]
</span><a href="https://github.com/ryancdickson/staging/pull/8" target="_blank"><span style="font-family:Arial,sans-serif">https://github.com/ryancdickson/staging/pull/8</span></a><span style="font-family:Arial,sans-serif;color:rgb(14,16,26)"> </span><u></u><u></u></p>
<p style="margin:0cm"><span style="font-family:Arial,sans-serif;color:rgb(14,16,26)">[12]
</span><a href="https://github.com/cabforum/servercert/pull/487" target="_blank"><span style="font-family:Arial,sans-serif">https://github.com/cabforum/servercert/pull/487</span></a><span style="font-family:Arial,sans-serif;color:rgb(14,16,26)"> </span><u></u><u></u></p>
<p style="margin:0cm"><span style="font-family:Arial,sans-serif;color:rgb(14,16,26)">[13]
</span><a href="https://github.com/cabforum/servercert/compare/6d10abda8980c6eb941987d3fc26e753e62858c0..5224983ef0a6f94c18808ea3469e7a5ae35746e5" target="_blank"><span style="font-family:Arial,sans-serif">https://github.com/cabforum/servercert/compare/6d10abda8980c6eb941987d3fc26e753e62858c0..5224983ef0a6f94c18808ea3469e7a5ae35746e5</span></a><u></u><u></u></p>
<p style="margin:0cm"><span style="font-family:Arial,sans-serif;color:rgb(14,16,26)">[14]
</span><a href="https://github.com/cabforum/servercert/pull/507" target="_blank"><span style="font-family:Arial,sans-serif">https://github.com/cabforum/servercert/pull/507</span></a><span style="font-family:Arial,sans-serif;color:rgb(14,16,26)"> </span><u></u><u></u></p>
<p style="margin:0cm"><span style="font-family:Arial,sans-serif;color:rgb(14,16,26)">[15]
</span><a href="https://github.com/cabforum/servercert/compare/5224983ef0a6f94c18808ea3469e7a5ae35746e5..2dcf1a8fe5fc7b6a864b5767ab1db718bc447463" target="_blank"><span style="font-family:Arial,sans-serif">https://github.com/cabforum/servercert/compare/5224983ef0a6f94c18808ea3469e7a5ae35746e5..2dcf1a8fe5fc7b6a864b5767ab1db718bc447463</span></a><span style="font-family:Arial,sans-serif;color:rgb(14,16,26)"> </span><u></u><u></u></p>
<p style="margin:0cm"><span style="font-family:Arial,sans-serif;color:rgb(80,0,80)"> </span><u></u><u></u></p>
<p style="margin:0cm"><span style="font-family:Arial,sans-serif;color:rgb(14,16,26)">The following motion has been proposed by Chris Clements and Ryan Dickson of Google (Chrome Root Program) and endorsed by Aaron Gable (ISRG / Let’s Encrypt) and Wayne Thayer (Fastly). </span><u></u><u></u></p>
<p style="margin:0cm"><span style="font-family:Arial,sans-serif;color:rgb(80,0,80)"> </span><u></u><u></u></p>
<p style="margin:0cm"><b><span style="font-family:Arial,sans-serif;color:black">— Motion Begins —</span></b><u></u><u></u></p>
<p style="margin:0cm"><span style="font-family:Arial,sans-serif;color:rgb(80,0,80)"> </span><u></u><u></u></p>
<p style="margin:0cm"><span style="font-family:Arial,sans-serif;color:black">This ballot modifies the “Baseline Requirements for the Issuance and Management of Publicly-Trusted TLS Server Certificates” (“Baseline Requirements”), based on Version 2.0.4.</span><u></u><u></u></p>
<p style="margin:0cm"><span style="font-family:Arial,sans-serif;color:rgb(80,0,80)"> </span><u></u><u></u></p>
<p style="margin:0cm"><span style="font-family:Arial,sans-serif;color:black">MODIFY the Baseline Requirements as specified in the following Redline:</span><u></u><u></u></p>
<p style="margin:0cm"><a href="https://github.com/cabforum/servercert/compare/c4a34fe2292022e0a04ba66b5a85df75907ac2a2..2dcf1a8fe5fc7b6a864b5767ab1db718bc447463" target="_blank"><span style="font-family:Arial,sans-serif">https://github.com/cabforum/servercert/compare/c4a34fe2292022e0a04ba66b5a85df75907ac2a2..2dcf1a8fe5fc7b6a864b5767ab1db718bc447463</span></a><span style="font-family:Arial,sans-serif;color:black"> </span><u></u><u></u></p>
<p style="margin:0cm"><span style="font-family:Arial,sans-serif;color:rgb(80,0,80)"> </span><u></u><u></u></p>
<p style="margin:0cm"><b><span style="font-family:Arial,sans-serif;color:black">— Motion Ends —</span></b><u></u><u></u></p>
<p style="margin:0cm"><span style="font-family:Arial,sans-serif;color:rgb(80,0,80)"> </span><u></u><u></u></p>
<p style="margin:0cm"><span style="font-family:Arial,sans-serif;color:black">This ballot proposes a Final Maintenance Guideline. The procedure for approval of this ballot is as follows:</span><u></u><u></u></p>
<p style="margin:0cm"><span style="font-family:Arial,sans-serif;color:rgb(80,0,80)"> </span><u></u><u></u></p>
<p style="margin:0cm"><b><span style="font-family:Arial,sans-serif;color:black">Discussion (at least 11 days)</span></b><u></u><u></u></p>
<p style="margin:0cm"><span style="font-family:Arial,sans-serif;color:black">- Start: 2024-05-20 14:30:00 UTC</span><u></u><u></u></p>
<p style="margin:0cm"><span style="font-family:Arial,sans-serif;color:black">- End no earlier than: 2024-05-31 14:30:00 UTC</span><u></u><u></u></p>
<p style="margin:0cm"><span style="font-family:Arial,sans-serif;color:rgb(80,0,80)"> </span><u></u><u></u></p>
<p style="margin:0cm"><b><span style="font-family:Arial,sans-serif;color:black">Vote for approval (7 days)</span></b><u></u><u></u></p>
<p style="margin:0cm"><span style="font-family:Arial,sans-serif;color:black">- Start: TBD</span><u></u><u></u></p>
<p style="margin:0cm"><span style="font-family:Arial,sans-serif;color:black">- End: TBD</span><u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
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