trong>Added</strong> <a href=/v1.20/docs/ops/best-practices/security/#authorization-policies>security best practice for authorization policies</a></li></ul><h2 id=breaking-changes>Breaking Changes</h2><p>As part of the fixes for <a href=/v1.20/news/security/istio-security-2021-006/>ISTIO-SECURITY-2021-006</a>, the <a href=/v1.20/news/releases/1.8.x/announcing-1.8/upgrade-notes/#multicluster-global-stub-domain-deprecation>previously deprecated</a> <code>.global</code> stub domain for multicluster will no lon