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Zeus Wallet took its infrastructure offline after a cyberattack, while the self-custodial Bitcoin (BTC) service said customer funds remained safe and no Lightning flaw was found. Key Points: Zeus contained the attack within hours and kept its infrastructure offline for an audit. No customer funds we

A suspected fourth attack wave moved nearly 389 Bitcoin (BTC) from 462 addresses linked to Coldcard’s firmware flaw, Galaxy Research said Monday. Key Points: Researchers identified 218 transactions that moved about 388.93 BTC from 462 suspected victim addresses. Earlier confirmed waves had already d

Ledger and Trezor told users their funds are safe after a firmware flaw in rival Coldcard wallets enabled a $70 million Bitcoin (BTC) theft in 41 minutes. Key Points: Ledger, Trezor, Bitkey, Jade and Tangem said the Coldcard firmware flaw does not touch their devices. Attackers drained 1,082.65 BTC

Coinkite warned Coldcard Mk3 users to move funds following a 594.5 Bitcoin (BTC) sweep from 500 addresses and evidence of weak seed generation. Key Points: Every Mk3 firmware release since version 4.0.1 may have generated vulnerable seeds. Mk4, Mk5 and Q users with older firmware must update their d

Three Bitcoin (BTC) holders sued Apple in California federal court, saying a counterfeit Sparrow Wallet app on the App Store drained $1.8 million. Key Points: Three plaintiffs say a fake Sparrow Wallet listing on the App Store cost them a combined $1.8 million in Bitcoin between May and August 2025.