Artificial Intelligence-Generated Content(AIGC)is rapidly transforming the landscape of information dissemination while exacerbating the spread of fake news.This paper examines the mechanisms of AI-generated fake news,the development and societal impact of deepfake technology,and the role of AI in political manipulation and its threats to democratic institu-tions.The study highlights that AI-generated fake news spreads at an unprecedented speed and scale,exhibits high authenticity,and contributes to social trust crises,political polariza-tion,and economic and legal risks.Furthermore,the paper reviews current countermeasures against AI-generated misinformation,including deepfake detection technologies,automated fake news identification systems,and platform accountability.Based on existing legal and policy frameworks,this study explores how international collaboration among technology,policy,and society can effectively address AI-generated disinformation.Finally,future re-search directions are proposed,including the application of quantum computing and trusted computing in fake news governance,the ongoing arms race between AI forgery and counter-forgery technologies,and strategies to enhance public digital resilience.
