Coldcard Exploit Losses Near $114M as Sub-1 BTC Transfers Hit Record

Suspected Coldcard vulnerability thefts approach $114M with 1,816 BTC compromised. Sub-1 BTC transfer volume surged to a post-FTX high of 39,600 BTC on July 31.

Woofun AI reports that Galaxy Research estimates cumulative losses from the Coldcard hardware wallet vulnerability at approximately 1,816 BTC, valued at roughly $114 million. This figure includes 1,367 BTC from three confirmed attack waves and 448.73 BTC linked to a suspected fourth organized campaign.

On July 31, transfers under 1 BTC totaled 39,600 BTC, marking the highest volume since the 2022 FTX collapse, while active addresses rose from 645,000 to nearly 1 million. Kraken Chief Security Officer Nick Percoco described the incident as a "wake-up call" for the hardware wallet sector, urging the creation of an independent validation system for random number generation mechanisms.