Mercado Bitcoin, Brazil’s largest exchange, halted withdrawals over $40 million. Tether froze more than 4.5 million USDT, while ZachXBT flagged an EU entity that lost $106 million from centralized exchange accounts that same day, plus a Solana arbitrage bot wallet drained of $786,000. Binance’s $6.3 billion case has just entered its second withdrawal phase, and South Korean regulators are urging exchanges to increase their cold-wallet ratio, even though the current requirement is already 80%. This doesn’t look like an isolated incident; it looks more like someone is working through a list and sweeping targets in bulk. I’ve been watching this figure for a while: if they’re not sparing even a $786,000 bot, it means the attack surface has spread from major exchanges to on-chain automated scripts. Smaller exchanges and bot teams simply don’t have the security budgets to withstand this kind of sweep. $BTC $SOL