Notion Customer Data Accessed in Fireworks AI Data Breach Following LLMJacking Attack
Notion has disclosed a data breach affecting a small subset of its customers due to a compromise at Fireworks AI, a cloud platform used for running open-source AI models. The breach involved two attacks in October 2026: initially through compromised internal credentials and later via a third-party cloud provider hosting Fireworks AI’s research and development machines. The second attack on October 24 resulted in unauthorized workloads that exposed Notion AI chat transcripts tied to the Insights feature. Less than 1% of Notion’s workspaces were affected, and most transcripts could not be linked back to specific customers or workspaces. Notion recommends impacted users rotate any credentials or sensitive information potentially exposed during the incident. Fireworks AI contained the breach on the same day and notified Notion on November 2.
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Notion Customer Data Accessed in Fireworks AI Data Breach Following LLMJacking Attack
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Notion has disclosed a data breach affecting a small subset of its customers due to a compromise at Fireworks AI, a cloud platform used for running open-source AI models. The breach involved two attacks in October 2026: initially through compromised internal credentials and later via a third-party cloud provider hosting Fireworks AI’s research and development machines. The second attack on October 24 resulted in unauthorized workloads that exposed Notion AI chat transcripts tied to the Insights feature. Less than 1% of Notion’s workspaces were affected, and most transcripts could not be linked back to specific customers or workspaces. Notion recommends impacted users rotate any credentials or sensitive information potentially exposed during the incident. Fireworks AI contained the breach on the same day and notified Notion on November 2.