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Blockchain Data

Security incidents tagged Blockchain Data. Newest first.

1 Blockchain Data incident in the last 12 months

Critical 4 · High 3 · Med 2 · Low 1 · Update ½LessMore
Incidents
1
Live
1
Patched
0
Days without an incident
0
Longest quiet run: 1 day (Oct 27–Oct 27)
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  • MediumPartly patched

    Blockchain data provider Allium discloses unauthorized access, revokes all API keys

    Allium, a blockchain data provider whose query tools, APIs and warehouse data feeds are used by companies including Visa and Coinbase, disclosed on Oct 28 2026 that it detected unauthorized access to some of its systems on Oct 25. The Allium App and Explorer were offline for about two and a half days. When Explorer and its API came back on Oct 28, Allium revoked existing API keys, required new passwords and recommended MFA, disabled uploading and reading previously uploaded data, and kept Allium Assistant and the Allium MCP offline. It says affected customers were notified directly and an independent security firm is investigating, but it has not said which systems were reached or whether customer data was exposed.

    Allium blockchain data platform (App, Explorer, Explorer API, datashares)Since Oct 25, 2026

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