TLDR
- Coinbase says customer funds are safe after a security incident at analytics vendor Amplitude.
- Some customer contact information was exposed, but Coinbase says its own systems were not accessed.
- Coinbase is notifying affected customers and reporting the incident to regulators.
- The company did not say how many customers were affected or which contact fields were exposed.
- Several financial firms in South Korea also reported customer data breaches.
Coinbase said customer funds are safe after a security incident at a third-party vendor exposed some customer contact information. The crypto exchange denied reports that it had been hacked.
The company shared the details on Oct. 27 through its Coinbase Support account on X. It said the incident began at Amplitude, an outside analytics provider, and not at the exchange itself.
Coinbase has not had a data breach. 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 customer…
— Coinbase Support (@CoinbaseSupport) October 28, 2026
Coinbase said its own systems were not accessed without authorization. It added that it has found no evidence of unauthorized access.
What Coinbase Said About the Amplitude Incident
The exposed data includes only a “small subset” of contact information, according to Coinbase. Data tied to other Amplitude clients was also affected.
⚠️ DATA BREACH ALERT: Coinbase customer contact information exposed in security incident at analytics provider Amplitude.
Hackers have allegedly accessed contact information belonging to more than 70,000 Coinbase users.
Coinbase confirms there is no evidence of unauthorised… pic.twitter.com/teinDjUk9H
— Coin Bureau (@coinbureau) October 28, 2026
Coinbase said no customer assets were harmed. It also said the event does not count as a data breach of its own systems.
The exchange is emailing affected customers, as required by law. It is also reporting the incident to regulators.
Coinbase did not say how many customers were affected. It also did not say exactly which contact fields were exposed.
Phishing Risks for Users
Exposed email addresses and phone numbers can be used in phishing and social engineering attacks. This can happen even when passwords, private keys and funds are not affected.
The case shows a supply chain risk. Customers can face security risks through third parties even when a company’s core systems stay secure.
An AI-generated trend report from a Korean news outlet rated the short-term market outlook as neutral, with 42% confidence. It said the Fear & Greed Index stood at 51 and the Kimchi Premium was 0.57%.
The same report said Bitcoin’s dominance was 59.43%. It said there was not enough evidence that the market was reacting directly to the Coinbase news.
The incident comes as several financial firms in South Korea also disclosed customer data breaches. Daishin Securities said personal information for 38,490 customers was hacked, including names, email addresses and mobile phone numbers.
The brokerage said it detected signs of unauthorized access by hackers last week. Yonhap News Agency reported that some personal information of Bithumb customers was leaked in a cyberattack by an external party.
Financial authorities have also begun an inspection into the data breach at Mirae Asset Global Investments.
Stop guessing and start investing with confidence. KnockoutStocks gives you the AI insights, market intelligence, and stock research you need to spot opportunities, cut through the noise, and make smarter investment decisions — all in one powerful platform.
Sign up today and get 50% OFF full access to our premium stock picks.
Simply use coupon code SPECIAL50 at checkout to claim your exclusive discount.
Get 3 Free Stock Ebooks
Discover top-performing stocks in AI, Crypto, and Technology with expert analysis.
- Top 10 AI Stocks - Leading AI companies
- Top 10 Crypto Stocks - Blockchain leaders
- Top 10 Tech Stocks - Tech giants
