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Allium breach Oct 25: replace API keys and passwords as services restart

Existing API keys are being revoked: create a new key in the app and reset password, MFA recommended.

App, Explorer and Explorer APIs restored Oct 28; Assistant, MCP, uploads and prior data access still down.

First reported Oct 29, 2026, 01:45 UTC

Source reports

  • Allium, Blockchain Data Provider Serving Visa, Stripe and Coinbase, Discloses Security Breach Blockchain data infrastructure provider Allium disclosed that it detected unauthorized access to certain systems on October 25. The company has notified affected customers and engaged… — @WuBlockchain (X), Oct 29, 2026, 01:45 UTC
  • ALLIUM DISCLOSES BREACH, CUSTOMERS MUST REPLACE API KEYS Core services are back online, the blockchain data provider says. Uploaded-data access remains disabled, and some data-feed gaps are still being filled. Read more here… — @DefiantNews (X), Oct 29, 2026, 01:58 UTC
  • ⚠️ ALERT: Allium, the blockchain data provider serving Visa, Stripe and Coinbase, discloses a security breach into its systems. The company detected the breach on October 25, notified affected customers and brought in an independent cybersecurity firm. The full scope and whether… — @coinbureau (X), Oct 29, 2026, 04:22 UTC
  • Allium disclosed unauthorized access detected Oct 25. Customer data exposure scope remains undisclosed. API keys revoked, users must create new key and reset password. App, Explorer and Explorer APIs restored Oct 28. — @PopaRecon (X), Oct 29, 2026, 04:28 UTC
  • ⚠️ Onchain data provider Allium hit by security breach, core platform back online with some features still down Source — ahboyashreads, Oct 29, 2026, 04:28 UTC
  • ⚠️ Onchain data provider Allium hit by security breach, core platform back online with some features still down Source — Rickler Feed, Oct 29, 2026, 04:28 UTC
  • Allium, blockchain data provider for Visa and Coinbase, discloses security breach - 𝕏/@coinbureau 🔗 LinkedIn · Discord · Leviathan · Source 🗺️ Breach · Visa · Coinbase 🕵️ @Danicjade via 𝕏 — Rickler Feed, Oct 29, 2026, 09:30 UTC
  • Allium, blockchain data provider for Visa and Coinbase, discloses security breach - 𝕏/@coinbureau 🔗 LinkedIn · Discord · Leviathan · Source 🗺️ Breach · Visa · Coinbase 🕵️ @Danicjade via 𝕏 — Закрепи.sender, Oct 29, 2026, 09:30 UTC

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