Bitcoin Cold Wallet Attack Spreads to 4,500 Addresses as Losses Near $89 Million
A third wave of sweeps tied to weak Coldcard firmware has drained 1,367 BTC from thousands of wallets, with the attacker now targeting smaller balances.
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A third wave of sweeps tied to weak Coldcard firmware has drained 1,367 BTC from thousands of wallets, with the attacker now targeting smaller balances.
The company formerly known as MicroExcel posted a massive second-quarter loss tied to bitcoin's price decline, but says it has built a cash buffer covering more than two years of dividends.
The crypto exchange will halt all trading by August 26 and cease operations by January 2027, becoming the second major exchange to announce closure this week after BitMEX.
The Singapore-based mining pool that controlled nearly 20% of Bitcoin's global hashrate in 2019 has filed for bankruptcy with $173 million in debts, ending a years-long decline.
Nine firms including BlackRock, Coinbase, and Strategy have formed a consortium to fund Bitcoin security research and post-quantum cryptography development over three years.
The electric vehicle maker held its 11,509 BTC treasury steady through Q2 2026, reporting an impairment charge as bitcoin declined 14% during the quarter.
Twenty One Capital replaces Jack Mallers with Raphael Zagury as Strike exits the proposed three-way merger.
U.S. spot bitcoin ETFs recorded five consecutive days of net inflows, the longest streak since late April.
Bitcoin dips to $63,900 as Middle East tensions drive oil higher and Chinese AI competition rattles semiconductor stocks.
Strategy's Michael Saylor publishes 110-point critique against BIP-110, warning the soft fork threatens Bitcoin's neutrality and permissionless nature.
Bitcoin's rally to $65,000 lacks spot demand, driven by macro factors; institutional outflows continue
Long-dormant Bitcoin wallet transfers 5,908 BTC worth $383M after eight years, sparking onchain analysis
Bitcoin mining difficulty reaches a new record, signaling long-term miner commitment despite post-halving margin pressures.