Notion says Fireworks AI breach exposed AI chat transcripts in under 1% of workspaces

Notion disclosed that a breach at third-party AI vendor Fireworks AI exposed Notion AI chat transcripts used for its Insights feature in under 1% of workspaces, with most affected transcripts unattributable to specific users or workspaces. Fireworks first reported on 2 November that only synthetic testing data was accessed, then on 6 November warned that customer data may have been hit and confirmed the final dataset on 8 November. Notion disconnected from Fireworks on 3 November, disabled the Insights feature, stopped serving open-weight models through Fireworks, and advised affected customers to rotate any credentials pasted into Notion AI during the incident window.