China-nexus APTAdvanced persistent threat groups linked to China.1Articles893TopicsArticles with this TagSecurityChina-Linked UAT-8837 Exploited a Sitecore Zero-Day (CVE-2025-53690) to Gain Initial Access Into North American Critical InfrastructureChina-linked UAT-8837 exploited the Sitecore zero-day CVE-2025-53690 for initial access. What it mea...Jan 17, 2026