Security experts are warning about the growing influence of artificial intelligence in online disinformation campaigns after a British academic discovered a deepfake video using his likeness. Professor Alan Read of King’s College London was surprised to see a video circulating on social media in which a synthetic version of his face and voice delivered a political rant he had never made. Researchers say such videos, suspected to be mainly of Russian origin, are part of a wider trend of AI-generated content designed to spread misleading narratives and undermine trust in democratic institutions. Some campaigns have criticised European leaders or attempted to discredit Ukraine during the ongoing war. Experts say newer AI tools have made it easier and cheaper to create highly realistic videos, allowing influencers to reach large audiences quickly. The speed and scale of these synthetic messages pose a growing challenge for governments, regulators, and technology companies as they seek to limit the spread of coordinated disinformation online.