Coinbase said an incident involving analytics provider Amplitude affected contact information associated with a small subset of its customers. It said its own systems had not been accessed without authorization, customer funds remained safe, and affected users would receive a notification. Coinbase did not provide a comprehensive public breakdown of the affected data fields or the number of customers involved.
Exposed contact details could be used in phishing or support-impersonation messages, though the source does not report that this happened. Users are advised to verify unexpected messages through bookmarked official channels rather than following links in those messages.