Editor Notes: Reconstructing the reported timeline of events: (1) September 2023: The Matryoshka disinformation campaign reportedly began, allegedly producing anti-Ukrainian propaganda and distributing it via stolen accounts and bots on platforms like X and Telegram. (2) November 2023: Reports from Viginum reportedly revealed similarities between Matryoshka and Russia's GRU-linked Doppelgänger network, allegedly indicating potential shared origins. (3) Early 2024: The campaign allegedly began using AI to generate deepfake videos of academics from institutions like Cambridge and Harvard. (4) November 2024: The University of Bristol reportedly verified that a video falsely attributing political statements to historian Ronald Hutton was allegedly AI-manipulated. (5) December 13, 2024 (the date for this Incident ID): An investigation by The Insider reportedly confirmed that Matryoshka videos allegedly misrepresented academics’ voices to spread pro-Russian propaganda, with the footage heavily promoted in multiple languages by allegedly stolen social media accounts.