Bitcoin Theft Linked to Coldcard Devices Reaches Fourth Wave
A fourth wave of Coldcard-related thefts is unfolding, with researchers spotting activity in real time as transactions moved through the mempool. The incident now approaches 1,800 BTC across more than 5,200 addresses, while attacker behavior continues to shift across each wave.
Strategy Turns to Bitcoin Sales to Support Preferred Dividends
Strategy has sold approximately $218.4 million of bitcoin during 2026 to help fund preferred-stock dividends. Its $8.22 billion quarterly loss was mainly an unrealized accounting markdown, not an equivalent cash loss.
Scam Uses Fake IRS Letters and QR Codes to Target Crypto Wallets
Fraudsters are mailing crypto holders official-looking IRS notices that link to a bogus compliance portal. The site collects wallet, account-value and phone details before a possible social-engineering call.
Zcash restricts old pool after flaw raised hidden supply risk
Zcash has activated Ironwood, preventing new funds from entering the vulnerable Orchard shielded pool. Existing balances can migrate through a public accounting checkpoint, but the transition is only beginning.
Dango Ends Trading as August 13 Shutdown Deadline Approaches
Dango has stopped perpetuals trading and begun settling remaining positions under its closure plan. Withdrawals continue before the project’s Layer 1 blockchain is scheduled to stop on August 13.
