Fireworks AI Confirms Wider Breach Affecting Customer Datasets, Model Weights and Notion AI Chats

Fireworks AI disclosed on Monday that its investigation into a security incident first reported early last month  uncovered further malicious activity, affecting account and billing information, alongside secrets, datasets, and incomplete models for a "limited set of accounts."

In a notice published on October 10, 2026, the company said it detected unauthorized use of internal Fireworks