Cross-Sector entity
Of the tracked stories, 3 of 3 also mention Bitcoin, the most common co-covered peer. vulnerability accounts for 2 of the 3 tracked stories, while 1 other category carries the remainder. Coldcard appears in 3 tracked Cross-Sector stories from August 4, 2026.
3 verified stories tracked
Last mentioned: Aug 4, 2026
Entity pulse
Coverage balance Negative coverage leads. Negative coverage exceeds positive coverage by 100 percentage points.
Figures are computed live from our source-verified story record — see our methodology for how impact and sentiment are derived.
Of the tracked stories, 3 of 3 also mention Bitcoin, the most common co-covered peer. vulnerability accounts for 2 of the 3 tracked stories, while 1 other category carries the remainder. Coldcard appears in 3 tracked Cross-Sector stories from August 4, 2026. The tracked stories average 2.7 original sources each.
Computed from the 3 stories linked to this entity. Beat comparisons are omitted because no baseline was available for this window.
Coverage cohort
Other entities that clear the same relevance threshold in stories also covering Coldcard. Shared-story counts are live from our verified record — not editorial picks.
Public disclosure and advisory
Block’s Bitcoin Engineering and Security team releases a security advisory revealing the entropy-generating coding flaw in Coldcard. Coinkite issues a firmware update that fixes the vulnerability for new wallets but warns that existing wallets remain vulnerable.
Additional theft waves detected
Galaxy Research identifies two further suspicious transaction sequences, bringing total estimated losses to nearly $89 million.
Initial mass theft
Attackers drain over 1,000 BTC from 1,196 wallets in 41 minutes, initially valued at approximately $70 million.
A predictable recovery phrase vulnerability in Coldcard hardware wallets enabled a highly automated attack, draining $89 million from 1,200+ addresses in under an hour. The flaw, disclosed by Block’s security team, highlights critical supply-chain risks in entropy generation for embedded devices.
Over $89 million in Bitcoin was stolen from 1,200+ Coldcard hardware wallets after a firmware flaw made seed phrases predictable. The attack blitz on July 30, 2026, raises urgent questions about the safety of cold storage and may trigger a sell-off among spooked self-custody users.
Source: fox13seattle.com · fox5atlanta.com
The Coldcard vulnerability demonstrates how flawed random-number generation can compromise hardware wallets, a critical lesson for cryptographic security. Over 4,500 wallets lost $86M in Bitcoin as attackers reverse-engineered deterministic seed phrases. This ongoing breach forces a reevaluation of cold storage trust assumptions.
Source: The Business Times · Suvashree Ghosh
