The State of Cybersecurity in May 2026: AI-Powered Attacks, Critical 0-Days, and What Defenders Must Know

May 2026 is defined by AI-powered attacks (Claude workspace npm stealers, Grandoreiro phishing), an exploited 0-day flood (NGINX CVE-2026-42945, Defender, DirtyDecrypt), the GitHub breach and Megalodon CI/CD poisoning, and OAuth consent phishing that sidesteps MFA. Defense strategies inside.

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