Fireworks AI Reports Second Security Breach in Weeks

Fireworks AI, an artificial intelligence startup backed by Nvidia, notified customers on November 9, 2026, that a security breach occurred on October 24. This incident represents the company's second known hack within a few weeks.

An unauthorized third party gained access to an external cloud provider hosting the company's machines. The breach resulted in the exposure of tens of thousands of files, some of which contained customer data. Affected clients include Notion, Cursor, and Harvey.

Fireworks AI stated it is actively working with its customers to manage the incident.