Allium has resumed normal data delivery for 18 major chains on Snowflake and Databricks, while backfills and some feature restrictions remain pending.
Allium, a provider of blockchain data services, announced on Oct. 28 that it has restored normal delivery for 18 major cryptocurrency networks after a security incident that began on Oct. 25. The restoration covers raw and enriched tables on Snowflake and Databricks, while BigQuery continues to undergo backfill operations. The company said it has revoked existing API keys, required new passwords and advised multi‑factor authentication for all users.
According to CryptoSlate, the chains that passed completeness and freshness checks on Snowflake and Databricks include Ethereum, Solana, Bitcoin, Base, Arbitrum and Arc, among others. Allium’s internal validation indicates that data for these networks is now being delivered without interruption. However, the provider notes that verification timestamps may appear stale because automated re‑verification processes are still being re‑enabled, a condition that does not imply missing data.
While live feeds are operational, Allium continues to backfill historical records for the period affected by the breach. The backfill effort is most extensive on BigQuery, where the company treats historical recovery as a separate task even for chains that have already passed checks on Snowflake and Databricks. In addition, Allium has temporarily disabled new data uploads and restricted access to previously uploaded tables, limiting queries that depend on those datasets until the backfill process is complete.
Allium’s published recovery instructions require customers to generate replacement API keys and set new passwords. The company also recommends enabling multi‑factor authentication to mitigate future risks. Existing API keys are being revoked, and users are instructed to coordinate with their Allium contacts for any exceptions. The guidance emphasizes that teams using Allium data for research, reconciliation or product infrastructure should verify both the warehouse‑chain combination and the historical window before relying on the restored data.
Stakeholders should monitor Allium’s updates on the progress of BigQuery backfills and the reopening of upload capabilities. Confirmation that all historical windows have been fully reconciled will be a key indicator that the service has fully recovered. Additionally, any further communications from Allium regarding additional security measures or third‑party audit results will be closely followed by developers and institutions that depend on its data pipelines.
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