Fake 'Anthropic Fable 5' Torrent Spreads as 91,000 Try to Download, Researchers Warn

In June 2026, shortly after Anthropic released its new Claude Fable 5 model, a fake 3.4 TiB torrent masquerading as "Anthropic Fable 5" began spreading on The Pirate Bay and elsewhere, with more than 91,000 users attempting to download it, prompting security researchers to warn that it is malware. The distributed file is not a leak of the model's weights but a fake exploiting the post-launch attention and access restrictions, multiple sources conclude.