Grafana Labs has confirmed that its previously disclosed GitHub breach started with the TanStack npm supply-chain attack run by TeamPCP, the same one that hit OpenAI and Mistral AI. Grafana detected the activity on May 11, rotated a significant number of GitHub workflow tokens, but one token slipped through and the attacker used it to pull Grafana's codebase. The downstream extortion attempt under the CoinbaseCartel banner came on May 16 and Grafana refused to pay, citing FBI guidance. The incident chains TeamPCP's TanStack OIDC-token theft into a directly observable secondary breach at a major observability vendor.
Grafana Labs says an attacker stole a token that gave access to its GitHub environment, downloaded the company's private codebase, and then demanded a ransom to keep the code from being published. Grafana refused to pay and cited FBI guidance against rewarding extortion. The company says no customer data was accessed and the compromised credentials have been invalidated. A data-extortion crew called CoinbaseCartel, tied to the same ecosystem as ShinyHunters, Scattered Spider, and LAPSUS$ with around 170 victims since September 2025, claimed credit. Grafana has not disclosed which code was taken or when the intrusion happened.
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