A tumultuous 24-hour period in cybersecurity, from April 21-22, 2026, has seen a surge of high-impact attacks targeting critical infrastructure, major corporations, and government agencies. Key events include the discovery of novel OT-focused malware strains ZionSiphon and Lotus Wiper targeting water and energy sectors, a sprawling data breach at Canada Life affecting 70,000 individuals, and active exploitation of zero-day vulnerabilities in Microsoft SharePoint and Defender. The Everest ransomware gang also claimed attacks on two major U.S. banks, while a supply chain attack hit Vercel via a third-party AI tool, highlighting escalating global cyber threats.
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