Coinbase said a security incident involving analytics provider Amplitude exposed contact information belonging to a small subset of its customers, while stressing that there was no evidence its own systems had been breached.
The cryptocurrency exchange said the affected data came from the vendor’s systems and that customer funds were not impacted. Coinbase Support disclosed the incident on X, saying the event also affected other Amplitude clients. The company did not publicly state how many Coinbase customers were involved.
According to Cointelegraph, the publication contacted Coinbase for a figure but had not received a response by the time of publication.
What Coinbase disclosed
The company’s statement distinguishes between an exposure at a third-party provider and an intrusion into Coinbase’s own infrastructure. Amplitude is an analytics vendor, meaning its services can be used to study how customers interact with digital products. In this case, Coinbase said the incident exposed some customers’ contact data.
Coinbase described the affected group as a “small subset” of its customers. It did not identify the specific contact details involved in the incident in the supplied disclosure, nor did it provide a total number of affected users.
The exchange also said there was no impact on customer funds. That means the statement concerned the exposure of information rather than the reported unauthorized movement of cryptocurrency or cash from customer accounts.
Wider cybersecurity context
The disclosure came as reports emerged of cyber incidents involving both cryptocurrency businesses and traditional financial companies. South Korean exchange Bithumb was investigating whether a breach of its internal work platform had exposed customer information.
Daishin Securities, a South Korean brokerage, separately reported a leak involving personal and credit information belonging to 38,490 customers. These incidents illustrate the range of risks financial firms face, including attacks or exposures involving internal systems and outside technology providers.
Coinbase has previously disclosed a separate incident. In May 2025, the exchange said a data breach had affected less than 1% of its monthly transacting users. It estimated reimbursement and remediation costs from that event at up to $400 million. The material provided does not link that earlier breach to the Amplitude incident.
Moneyiar market picture
Moneyiar data at the stated times showed mixed performance among the listed digital assets:
- Lighter (LIT) was priced at $3.1819342396, down 1.45% over 24 hours but up 5.12% over seven days, as of October 25, 2026, at 22:39 +03:30.
- BAS (BAS) stood at $0.0169243841, down 1.24% in 24 hours and 7.19% over seven days, at the same stated time.
- Data Network (DATA) traded at $0.1503553856, down 4.42% over 24 hours and 7.71% over seven days, as of 22:38 +03:30.
- Alchemy Pay (ACH) was $0.0050519273, down 2.05% over 24 hours and 2.83% over seven days, as of 22:39 +03:30.
The market figures describe price movements and do not indicate whether the Coinbase-related disclosure affected these assets.
