AI Security Breach

An AI security breach is an incident in which an attacker gains unauthorized access to, or control over, an AI system, its training data, or the information it handles. Breaches can expose customer records, leak proprietary models, or let outsiders manipulate what an AI tool says or does. For compliance and risk teams, these incidents trigger notification duties under privacy and data protection laws and raise questions about whether the organization's vendor oversight and access controls were adequate.

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Corporate PolicyUS2026-11-10

Fireworks AI's Second Breach Exposes Model Weights, Billing Data via Cloud Provider

Fireworks AI disclosed a second cyberattack in October 2026, tracing to a compromised third-party cloud provider. The breach exposed customer billing records, partial model weights, and datasets for certain customers. Customers including Notion, Cursor, and Harvey were affected.

Fireworks AI LLMJacking third-party risk AI security breach model weight exposure data breach supply chain risk