Law enforcement may already know who emptied more than a thousand Bitcoin from Coldcard wallets in the first and largest wave of the July 2026 drains. Block’s investigation believes they traced the attacker’s on-chain sweeps to a paid account at a major blockchain data provider whose internal logs matched the theft pattern with “extraordinary specificity.” 

PSA: The attack is ongoing, targeting weak private keys generated on devices as old as the MK2 with firmware 4.0.1 onwards. If you may have one, double-check and move funds asap. See Coinkite advisory and status page. 

The coins from that wave—1,082.65 BTC—still sit untouched in the attacker’s address, leaving hope…

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