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<p><a href="https://www.abetterinternet.org/">Internet Security Research Group (ISRG)</a> is the non-profit entity that operates the Let's Encrypt certificate authority. Some policies that apply to Let's Encrypt are ISRG policies, some are specific to Let's Encrypt.</p>

<h1 id="let-s-encrypt-subscriber-agreement">Let's Encrypt Subscriber Agreement</h1>
<p>Current Agreements</p>
<ul>
  <li><a href="/documents/LE-SA-v1.2-November-15-2017.pdf">v1.2, November 15, 2017</a></li>
  <li><a href="/documents/LE-USG-SA-Amendment-Sept-22-2015.pdf">U.S. Government Amendment, September 22, 2015</a></li>
  <li><a href="/documents/LE-US-State-Local-SA-Amendment-Dec-28-2016.pdf">U.S. State and Local Government Amendment, December 28, 2016</a></li>
</ul>
<p><button type="button" class="collapsible-button" id="sa-history">View History</button></p>
<div class="collapsible-content" id="sa-history-content">
<ul>
  <li><a href="/documents/LE-SA-v1.1.1-v1.2-diff.docx">Differences from v1.1.1 to v1.2</a></li>
  <li><a href="/documents/LE-SA-v1.1.1-August-1-2016.pdf">v1.1.1, August 1, 2016</a></li>
  <li><a href="/documents/LE-SA-v1.0.1-v1.1.1-diff.docx">Differences from v1.0.1 to v1.1.1</a></li>
  <li><a href="/documents/LE-SA-v1.0.1-July-27-2015.pdf">v1.0.1, July 27, 2015</a></li>
</ul>
</div>

<h1 id="isrg-certificate-policy">ISRG Certificate Policy</h1>

<ul>
  <li><a href="/documents/isrg-cp-v2.4/">v2.4, January 21, 2020</a></li>
</ul>
<p><button type="button" class="collapsible-button" id="cp-history">View History</button></p>
<div class="collapsible-content" id="cp-history-content">
<ul>
  <li><a href="/documents/isrg-cp-v2.3/">v2.3, July 3, 2019</a></li>
  <li><a href="/documents/isrg-cp-v2.2/">v2.2, September 20, 2018</a></li>
  <li><a href="/documents/isrg-cp-v2.1/">v2.1, February 6, 2018</a></li>
  <li><a href="/documents/isrg-cp-v2.0/">v2.0, May 22, 2017</a></li>
  <li><a href="/documents/ISRG-CP-v1.3.pdf">v1.3, April 13, 2017</a></li>
  <li><a href="/documents/ISRG-CP-May-5-2016.pdf">v1.2, May 5, 2016</a></li>
  <li><a href="/documents/ISRG-CP-September-9-2015.pdf">v1.1, September 9, 2015</a></li>
  <li><a href="/documents/ISRG-CP-May-5-2015.pdf">v1.0, May 5, 2015</a></li>
</ul>
</div>

<h1 id="isrg-certification-practice-statement">ISRG Certification Practice Statement</h1>

<ul>
  <li><a href="/documents/isrg-cps-v2.7/">v2.7, January 21, 2020</a></li>
</ul>
<p><button type="button" class="collapsible-button" id="cps-history">View History</button></p>
<div class="collapsible-content" id="cps-history-content">
<ul>
  <li><a href="/documents/isrg-cps-v2.6/">v2.6, July 3, 2019</a></li>
  <li><a href="/documents/isrg-cps-v2.5/">v2.5, November 14, 2018</a></li>
  <li><a href="/documents/isrg-cps-v2.4/">v2.4, September 20, 2018</a></li>
  <li><a href="/documents/isrg-cps-v2.3/">v2.3, May 4, 2018</a></li>
  <li><a href="/documents/isrg-cps-v2.2/">v2.2, March 10, 2018</a></li>
  <li><a href="/documents/isrg-cps-v2.1/">v2.1, February 6, 2018</a></li>
  <li><a href="/documents/isrg-cps-v2.0/">v2.0, April 13, 2017</a></li>
  <li><a href="/documents/ISRG-CPS-October-18-2016.pdf">v1.5, October 18, 2016</a></li>
  <li><a href="/documents/ISRG-CPS-May-5-2016.pdf">v1.4, May 5, 2016</a></li>
  <li><a href="/documents/ISRG-CPS-March-16-2016.pdf">v1.3, March 16, 2016</a></li>
  <li><a href="/documents/ISRG-CPS-September-22-2015.pdf">v1.2, September 22, 2015</a></li>
  <li><a href="/documents/ISRG-CPS-September-9-2015.pdf">v1.1, September 9, 2015</a></li>
  <li><a href="/documents/ISRG-CPS-May-5-2015.pdf">v1.0, May 5, 2015</a></li>
</ul>
</div>

<h1 id="let-s-encrypt-privacy-policy">Let's Encrypt Privacy Policy</h1>

<ul>
  <li><a href="/privacy/">Current Privacy Policy</a></li>
</ul>

<h1 id="let-s-encrypt-trademark-policy">Let's Encrypt Trademark Policy</h1>

<ul>
  <li><a href="/trademarks/">Current Trademark Policy</a></li>
</ul>

<h1 id="isrg-code-of-conduct">ISRG Code of Conduct</h1>

<ul>
  <li><a href="https://www.abetterinternet.org/code-of-conduct/">Current ISRG Code of Conduct</a></li>
</ul>

<h1 id="isrg-non-discrimination-statement-and-policy">ISRG Non-Discrimination Statement and Policy</h1>

<ul>
  <li><a href="https://www.abetterinternet.org/nondiscrimination/">Current ISRG Non-Discrimination Statement and Policy</a></li>
</ul>

<h1 id="isrg-legal-transparency-reports">ISRG Legal Transparency Reports</h1>

<ul>
  <li><a href="/documents/ISRG-Legal-Transparency-Report-October-1-2019.pdf">Current Report, October 1, 2019</a></li>
</ul>
<p><button type="button" class="collapsible-button" id="ltr-history">View History</button></p>
<div class="collapsible-content" id="ltr-history-content">
<ul>
  <li><a href="/documents/ISRG-Legal-Transparency-Report-April-1-2019.pdf">April 1, 2019</a></li>
  <li><a href="/documents/ISRG-Legal-Transparency-Report-October-1-2018.pdf">October 1, 2018</a></li>
  <li><a href="/documents/ISRG-Legal-Transparency-Report-April-1-2018.pdf">April 1, 2018</a></li>
  <li><a href="/documents/ISRG-Legal-Transparency-Report-October-1-2017.pdf">October 1, 2017</a></li>
  <li><a href="/documents/ISRG-Legal-Transparency-Report-April-1-2017.pdf">April 1, 2017</a></li>
  <li><a href="/documents/ISRG-Legal-Transparency-Report-October-1-2016.pdf">October 1, 2016</a></li>
  <li><a href="/documents/ISRG-Legal-Transparency-Report-April-1-2016.pdf">April 1, 2016</a></li>
  <li><a href="/documents/ISRG-Legal-Transparency-Report-July-1-2015.pdf">July 1, 2015</a></li>
</ul>
</div>

<h1 id="webtrust-audits">WebTrust Audits</h1>

<ul>
  <li>August 31, 2019: <a href="https://www.cpacanada.ca/webtrustseal?sealid=10336">Trust Services Principles and Criteria for Certification Authorities Version 2.1</a></li>
  <li>August 31, 2019: <a href="https://www.cpacanada.ca/webtrustseal?sealid=10337">WebTrust Principles and Criteria for Certification Authorities – SSL Baseline with Network Security – Version 2.3</a></li>
</ul>
<p><button type="button" class="collapsible-button" id="webtrust-history">View History</button></p>
<div class="collapsible-content" id="webtrust-history-content">
<ul>
  <li> November 30, 2018: <a href="/audits/ISRG-2018-WebTrust-for-CAs-Report.pdf">Trust Services Principles and Criteria for Certification Authorities Version 2.1</a></li>
  <li> November 30, 2018: <a href="/audits/ISRG-2018-WebTrust-for-CAs-SSL-Baseline-Report.pdf">WebTrust Principles and Criteria for Certification Authorities – SSL Baseline with Network Security – Version 2.3</a></li>
  <li> December 15, 2017: <a href="/audits/ISRG-2017-WebTrust-for-CAs-Report.pdf">Trust Services Principles and Criteria for Certification Authorities Version 2.0</a></li>
  <li> December 15, 2017: <a href="/audits/ISRG-2017-WebTrust-for-CAs-SSL-Baseline-Report.pdf">WebTrust Principles and Criteria for Certification Authorities – SSL Baseline with Network Security – Version 2.2</a></li>
  <li> December 15, 2016: <a href="/audits/ISRG-2016-WebTrust-for-CAs-Report.pdf">Trust Services Principles and Criteria for Certification Authorities Version 2.0</a></li>
  <li> December 15, 2016: <a href="/audits/ISRG-2016-WebTrust-for-CAs-SSL-Baseline-Report.pdf">WebTrust Principles and Criteria for Certification Authorities - SSL Baseline with Network Security - Version 2.0</a></li>
  <li> December 15, 2015: <a href="/audits/ISRG-2015-WebTrust-for-CAs-Report.pdf">Trust Services Principles and Criteria for Certification Authorities Version 2.0</a></li>
  <li> December 15, 2015: <a href="/audits/ISRG-2015-WebTrust-for-CAs-SSL-Baseline-Report.pdf">WebTrust Principles and Criteria for Certification Authorities - SSL Baseline with Network Security - Version 2.0</a></li>
  <li> September 9, 2015: <a href="/audits/ISRG-2015-WebTrust-for-CAs-PITRA-Report.pdf">Trust Service Principles and Criteria for Certification Authorities Version 2.0</a></li>
  <li> September 9, 2015: <a href="/audits/ISRG-2015-WebTrust-for-CAs-SSL-Baseline-PITRA-Report.pdf">WebTrust Principles and Criteria for Certification Authorities - SSL Baseline with Network Security - Version 2.0</a></li>
</ul>
</div>

<h1 id="certificate-problem-reports">Certificate Problem Reports</h1>

<p>To report private key compromise, certificate misuse, or other types of fraud, compromise, misuse, inappropriate conduct, or any other matter related to certificates, please email <a href="mailto:cert-prob-reports@letsencrypt.org">cert-prob-reports@letsencrypt.org</a>.</p>

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