Fireworks AI discloses new breach after cloud provider hack

Fireworks AI has disclosed a new breach in which attackers reached its development machines through a security incident at a third-party cloud provider on October 23, 2026, and ran an unauthorised workload. The company says the attackers accessed resource metadata, billing information and incomplete model weights and datasets for some customers, but not payment card numbers, which it does not store; it has revoked credentials and is working with Palo Alto Networks' Unit 42 on the response.