Coinbase says a vendor incident at Amplitude exposed some customer contact details, while its own systems and user funds were not breached.
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Attackers obtained Keystone's factory authenticity key, so Keystone pulled devices and 25,964 buyer records were exposed; the company says seeds and private keys were not involved.
A replay of BTC-backed loans on hourly prices since 2014 shows that even 20% LTV loans would have been liquidated at times.
Keystone's breach has expanded: hackers also stole a key that could let counterfeit wallets pass authenticity checks, a serious hardware wallet security issue.
Electrum fixed a critical flaw where rogue servers could replace pending transactions and redirect bitcoin to attacker addresses.
Malicious Electrum servers baited users into fee-bump actions that stole bitcoin; users on versions before 4.8.3 should upgrade.
An analysis of 307 public Pump callouts from 12 top-PnL wallets tests whether high-ranking social traders actually deliver returns.
The Liquid federation's reserve gap has narrowed to 600 BTC after a test transfer, and direct peg-outs stay paused until full backing is restored.
Zcash co-founder Sean Bowe proposes ending the grants committee's 8% share of new ZEC, redirecting it to a reserve for future miners while the committee keeps funds already received.
The CFTC sued Utah to block its action against Kalshi, which sought up to $60 million in prediction-market profits.
Myriad voids 10 prediction markets after an admin-wallet compromise and promises refunds at pre-attack prices.