THE BLOCK: Decentralized exchange Arcus said it lost around $2.23 million in USDG due to an accounting bug on Nov. 9 that allowed an account to record a larger balance than it actually held. The exploiter requested another $3 million in withdrawals that were prevented by the rate limit on its bridge. The DEX said no other user accounts were impacted by the incident, and it has fully covered the temporary shortfall with the company treasury.