Coinbase User? Your Contact Details May Have Leaked Through a Vendor
Coinbase said a breach at analytics provider Amplitude exposed contact information for some customers. The exchange said its own systems saw no unauthorized access and customer funds remain safe.
The disclosure lands a day before Coinbase reports third-quarter earnings. Meanwhile, South Korean exchange Bithumb confirmed a breach of an internal system used by its staff.
Coinbase Names a “Small Subset” but No Number
Coinbase gave its account of the incident in a short post from its support account on X.
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Coinbase has not had a data breach.
— Coinbase Support (@CoinbaseSupport) October 28, 2026
Amplitude, an analytics vendor, experienced a security incident which impacted a small subset of Coinbase customer contact data, among other Amplitude customers.
We’ve found no evidence of unauthorized access to Coinbase systems, and…