OpenAI Blog · Oct 28, 2025
Doppel’s AI defense system stops attacks before they spread
Reviewed by Errol Vogt, Site support technician & online learning analyst · original summary · editorial policy
Doppel’s AI defense system stops attacks before they spread. Doppel uses GPT-5 and reinforcement fine-tuning to stop deepfake and impersonation attacks, cutting analyst workloads by 80% and reducing response times from hours to minutes. This update is relevant for small-office operators tracking changes in their tools.
Operator takeaway: For operators: review whether 'Doppel’s AI defense system stops attacks before they spread' affects your current setup before relying on it in production.
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