COLDCARD hacker identified by researchers through on-chain patterns such as fixed fee rates

Odaily News: According to Bitcoin News monitoring, Alex Thorn of Galaxy Research stated that researchers initially identified the first wave of COLDCARD thefts through a distinctive on-chain pattern: thousands of automated asset transfer transactions used the same fixed fee rate and exhibited identical transaction behavior. This characteristic enabled analysts to trace attacker activity across Bitcoin UTXO history and map out multiple rounds of coordinated theft.