- Dec 18 - AUTOSUR - 487,226 breached accounts
- Dec 18 - The Botting Network - 96,320 breached accounts
- Dec 17 - Web Hosting Talk - 515,149 breached accounts
- Dec 06 - KinoKong - 817,808 breached accounts
- Dec 01 - Zilvia.net - 287,863 breached accounts
- Dec 19 - Noclip.website – A digital museum of video game levels
- Dec 18 - Great ideas in theoretical computer science
- Dec 18 - Trained LLMs exclusively on pre-1913 texts
- Dec 18 - 1.5 TB of VRAM on Mac Studio – RDMA over Thunderbolt 5
- Dec 18 - AI vending machine was tricked into giving away everything