Doppel’s AI defense system stops attacks before they spread
OpenAI Blog
October 28, 2025
Discover how Doppel uses OpenAI’s GPT-5 and reinforcement fine-tuning (RFT) to stop deepfake and impersonation attacks before they spread, cutting analyst workloads by 80% and reducing threat response from hours to minutes.
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Originally published on OpenAI Blog on 10/28/2025