Livestreaming and broadcasting have become pillars of modern communication, from news on YouTube Live (https://www.youtube.com/live) to gaming on Twitch (https://www.twitch.tv). However, deepfake technology threatens these platforms with real-time synthetic forgeries—manipulated faces, voices, and behaviors—that can deceive audiences instantly. The stakes are high: a single deepfake stream could sway public opinion or defraud viewers before detection.…