Arbitrum's 12-person security council briefly rewrote a core contract to move $30M of Binance hack funds without holding the key, the second such episode this year.
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A builder's post-mortem on a pricing engine for a 90-minute match-linked derivative: a unit test passed while the price was off by 26 points, and the fix exposed a free arbitrage.
ZachXBT published 11 addresses and a TRM Labs graph tracing $106M suspected stolen from an EU entity toward Monero and a Tron bridge.
Brazilian exchange Mercado Bitcoin halted withdrawals after a security incident; Hypernative attributes over $40M in outflows to it, while the exchange says no clients lost money.
BTCPay Server told operators to shut down with ./btcpay-down.sh after reports of hot-wallet sweeps. The alert names no affected versions and no patch yet.
ZachXBT's suspected EU theft estimate has risen to $133M, with another $27M in exchange withdrawals traced, some after he first flagged it.
Binance's SAFU fund holds about half its bitcoin (~$580M) and sits below its own $800M top-up trigger, with no refill date given.
Ethereum Foundation essay on using Ethereum as infrastructure for digital public services that need cross-border institutional cooperation and privacy.
Anza warns Solana validators about an unpatched Linux kernel flaw that Ubuntu has not fixed, with workarounds that don't fully protect.
Mercado Bitcoin paused deposits and withdrawals after a breach of over $46M, and wallets now show post-hack transfers.