This cybersecurity brief for May 4, 2026, covers a massive data breach at educational tech firm Instructure, where the ShinyHunters group claims to have stolen data on 275 million users. Concurrently, a critical zero-day vulnerability (CVE-2026-41940) in cPanel is being actively exploited to deploy ransomware, compromising over 40,000 servers. Other major incidents include a high-severity Linux kernel flaw dubbed "Copy Fail" (CVE-2026-31431) allowing root access, and significant data breaches at Ameriprise Financial, Trellix, and Vimeo, highlighting ongoing threats from ransomware, supply chain attacks, and critical vulnerabilities.
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