⚡ Weekly Recap: Exchange 0-Day, npm Worm, Fake AI Repo, Cisco Exploit… | HappeningNow.news
Published Date: May 20, 2026

Cybersecurity The Hacker News May 18, 2026

⚡ Weekly Recap: Exchange 0-Day, npm Worm, Fake AI Repo, Cisco Exploit and More

Monday opens with a trust problem.

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Monday opens with a trust problem. A mail server flaw is under active use. A network control system was targeted. Trusted packages were poisoned. A fake model page pushed a stealer. Then came the familiar ransom claim: the data was returned and deleted. The pattern is clear. One weak dependency can leak keys. One leaked key can open cloud access. One cloud foothold can become a production

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