Every member of the Mozilla TRR program has to abide by the TRR resolver policies, undergo regular audits to ensure compliance, publicly commit to these policie

Every member of the Mozilla TRR program has to abide by the TRR resolver policies, undergo regular audits to ensure compliance, publicly commit to these policies in their own privacy policy, and publish annual transparency reports. CIRA meets these requirements, which provide assurance that they are treating user data with respect. See https://wiki.mozilla.org/Security/DOH-resolver-policy https://wiki.mozilla.org/Security/DOH-resolver-policy for more information.