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🏢 GreyNoise Organization

3 articles First seen: Dec 12, 2025 Last seen: 1w ago
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Attackers exploited Citrix NetScaler zero-day for at least three weeks undetected
Attackers exploited a critical zero-day vulnerability in Citrix NetScaler appliances for more than three weeks before the activity was publicly confirmed, giving them time to compromise organizations
https://www.linkedin.com/pulse/hackers-actively-target-ai-deployments-91000-attack-b16wc
Attacks pinned to critical React2Shell defect surge, surpass 50 confirmed victims
Attacks exploiting the critical React2Shell vulnerability have surged, affecting over 50 organizations globally, as various attackers, including nation-states and cybercriminals, seek to exploit its f
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