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CRYPTO · STORYBithumb, Coinbase ReportData Leaks

Bithumb and Coinbase Disclose Separate Customer Data Incidents

story · 3 sources
3 independentfirst seen published latency 14 min

Bithumb, South Korea’s second-largest crypto exchange, disclosed that hackers accessed its internal mobile system used by employees for work and information sharing, according to Cointelegraph. The exchange is still checking whether customer data was exposed, according to Decrypt, which noted two other financial firms also reported breaches around the same time.

Separately, Coinbase said an incident at analytics vendor Amplitude exposed some customers' contact data, according to Cointelegraph and The Defiant. Coinbase said it found no evidence that its own systems were accessed and that customer funds were unaffected, according to The Defiant. The exchange is notifying impacted users and regulators, per The Defiant.

Decrypt reported that the Amplitude-linked incident affected a “small subset” of Coinbase customers, though the exchange did not specify how many. Coinbase has framed the episode as a third-party vendor issue rather than a breach of its own infrastructure, according to Cointelegraph.

The two disclosures land separately but both involve customer contact or personal data rather than direct theft of crypto assets, based on the reporting from Cointelegraph, Decrypt, and The Defiant.

Sources: Cointelegraph, The Defiant, Decrypt

This article is for information only and is not financial advice.

What the market did

Price reactionnot recorded
Independent outlets3
Reports per hour0.23
Noveltyfollow-up3 outlet(s), 519 min spread

Each figure is this site’s own reading, with what it was measured against. A blank is a reading nobody took, not a zero. The before-the-headline window prints the rate a RANDOM hour clears the same bar, because a hit rate without its null is not a finding.

Tags: Bithumb, Coinbase, DataBreach, Amplitude, CyberSecurity

Bithumb Coinbase

Canonical IDBYTE-2026-10-28-0761permanent link
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