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Check Point Research
November 5th, 2026 at 2:00 PM

ChatGPT Lockdown Mode Bypass: Phishing, Malware Delivery, and Silent Data Exfiltration

Research by: Alexey Bukhteyev Key Takeaways Introduction Earlier this year, Check Point Research disclosed a security flaw in ChatGPT’s code-execution runtime that allowed sensitive conversation data to be silently exfiltrated to an attacker-controlled server through DNS tunneling, a hidden outbound channel that bypassed the runtime’s network isolation. A fix for this issue was promptly deployed. […] The post ChatGPT Lockdown Mode Bypass: Phishing, Malware Delivery, and Silent Data Exfiltration appeared first on Check Point Research .

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Canonical link: https://research.checkpoint.com/2026/chatgpt-lockdown-mode-bypass-phishing-malware-delivery-and-silent-data-exfiltration/