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#7 The Hacker News general September 30, 2026 at 08:24 UTC

Attackers Exploit NetScaler Flaw for Root Access, Deploy WHIPSHOT and SLAPSHOT

By [email protected] (The Hacker News)

AI Summary

Mandiant and Google GTIG observed threat actors deploying novel post-exploitation payloads dubbed WHIPSHOT and SLAPSHOT after exploiting the Citrix NetScaler pre-auth flaw against government, financial services, technology, education, and legal organizations in North America and Europe throughout September 2026. The attackers also mapped web shells to CSS-like URLs to evade detection and created superuser accounts. The suspected state-sponsored attribution and breadth of targeted sectors make this a high-priority incident for network defenders.

Relevance score: 81.0/100

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