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Braintrust security incident raises concerns over AI supply chain risks

Securityaffairs.Co •Pierluigi Paganini • May 9, 2026

Braintrust warned customers to rotate API keys after hackers breached an AWS account, exposing secrets tied to cloud-based AI models. AI observability startup Braintrust warned customers to rotate API keys after attackers gained unauthorized access to one of the company’s AWS accounts, potentially exposing secrets used to connect to cloud-based AI models. The company said […]

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This article is one source in a clustered incident — the cluster page carries the summary, timeline and every other outlet covering it.

Braintrust Confirms AWS Breach, Customers Urged to Rotate API Keys Braintrust, an AI evaluation startup, confirmed a breach involving unauthorized access to one of its AWS accounts, which contained API keys used by customers for accessing cloud-based AI models. The company notified customers to rotate their API keys as a precautionary measure. While Braintrust stated that it has contained the incident and locked down the compromised account, it is still investigating the cause of the breach. The breach may have downstream implications for customers relying on Braintrust's services. No evidence of broader exposure has been found, but the situation highlights vulnerabilities in the AI supply chain. The incident follows similar breaches in the industry, emphasizing the risks associated with cloud services. Braintrust's CEO noted that the company is taking steps to enhance security measures. 3 sources 59

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Braintrust security incident raises concerns over AI supply chain risks

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Attack Types (1)

Companies (2)

CWE Weaknesses (1)