OP and POL also lost more than a quarter over matched four-week windows, while Arbitrum One's active-address count rose.
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A malicious server can substitute a fake payment, then trick the user into signing it while raising the transaction fee. Developers say one user reported losing money.
Spot bitcoin ETFs lost $773 million on Thursday and Friday after three days of net inflows, per SoSoValue data.
ETH lagged bitcoin by 9.15 percentage points over matched nearly four-week windows, while US ether ETFs recorded another outflow on Oct. 22.
A different sender routed about 549,916 X and 1,909 USDT to a new beneficiary, while the affected pool held less than 200 USDT.
