Coldcard, a Bitcoin-only hardware wallet created by Coinkite, was at the epicentre of this controversy, as hackers managed to drain 500 wallet addresses that were supposed to be unbreakable. It also reveals that cold wallets, as hardware wallets are typically known, are not as impossible to crack as the public may have thought. Bitcoin ETFs Finish the Week with a Strong Net OutflowYesterday, Bitcoin ETFs experienced a $265 million daily outflow after the news broke. Almost all digital asset custodians use cold wallets to protect their holdings. Bitcoin ETFs Net Inflows – Source: SoSoValueAre these assets as safe as the public thinks?