As Wallets Expand From Storage to Execution, Can Their Control Layer Keep Up?

The report uses a July 2026 Coldcard hardware-wallet incident—where a flawed seed-generation process produced weaker-than-intended randomness and allowed attackers to drain Bitcoin without physical access—as a case study to argue that modern wallets, increasingly acting as execution environments, require expanded control layers. It outlines three core controls (key integrity, recoverability, and transaction understanding) plus incident response, reviews product approaches (e.g., DCENT features), and emphasizes that feature sets must be validated by measured outcomes such as recovery success and warning/override rates.