NetScaler zero-day exploitation escalates into mass attacks (CVE-2026-88771)

Help Net Security reports that exploitation of internet-exposed, unpatched Citrix NetScaler ADC and Gateway systems has escalated from targeted zero-day activity to widespread automated attacks following publication of a root-cause analysis and proof-of-concept exploit for CVE-2026-88771. The vulnerability is described as remotely exploitable under default configuration. The feed also covers AI security governance, deepfake and impersonation risks, malicious Custom GPT-driven ClickFix malware delivery, and simulated AI-enabled supply-chain attacks.