Expansion of Losses Due to Coldcard Bitcoin Wallet Breach, Grayscale Analyzes as 'Limited Vulnerability'

2026/08/04 09:03

CoinPost

Written by L.Kikutani

Expansion of Losses Due to Coldcard Bitcoin Wallet Breach, Grayscale Analyzes as 'Limited Vulnerability'

Coldcard Damage Worsens

On August 3, the U.S. asset management company Grayscale released a report analyzing attacks that exploited vulnerabilities in the self-managed Bitcoin wallet 'Coldcard'. According to their analysis, hackers have so far siphoned off approximately 1,400 BTC (worth about 14 billion yen) from users' wallets.

Grayscale's report indicates that the incident did not involve the Bitcoin blockchain itself, but was specific to the Coldcard wallet...

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