Five urgent steps are critical for Coldcard wallet users impacted by a flaw in its random number generator, according to Bitcoin advocate Samson Mow. The vulnerability threatens the core of self-custody bitcoin holders, hitting those who avoid exchanges and prioritize personal security.

Mow emphasizes detailed documentation of every aspect related to the compromised wallets, including addresses, firmware versions, transaction records, and timelines. This careful record-keeping could prove vital if stolen funds surface on exchanges and ownership needs to be established.

He stresses filing police reports and contacting cybercrime authorities immediately to create official records. Users should avoid falling prey to scams promising to recover stolen bitcoins and instead preserve their Coldcard devices, seed phrases, and PIN codes. These elements might serve as proof of ownership during investigations or freezes of illicitly moved funds.

The situation has raised deeper concerns about self-custody security in crypto wallets, echoing themes from previous vulnerabilities like the Cold Wallet Firmware flaw. Mow’s guidance aims to empower users to respond effectively to this serious breach.

This material is for informational purposes only and does not constitute financial advice.