Arcus, a decentralized exchange operating on the Robinhood Chain, fixed an accounting bug that allowed a user to withdraw approximately $2 million without being entitled to those funds. The platform covered the full shortfall from its own treasury, leaving customer balances unaffected. The issue was identified on November 9 and patched within one hour, while trading and withdrawals continued to operate normally. Arcus has not disclosed the bug’s specific mechanics or said whether the withdrawal resulted from deliberate exploitation or an opportunistic user noticing an inflated balance. Launched in beta around June or July 2026, the exchange offers tokenized stocks, cross-margined perpetual futures with leverage of up to 50x and fee-free spot trading.
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