According to CoinMeta, as reported by OnchainLens, Arcus suffered a loss of $2.23 million due to an accounting loophole. A newly created account took advantage of a sub-account transfer loophole to inflate the balance and withdrew $2.23 million. Additionally, another withdrawal attempt in the amount of $3 million was blocked due to on-chain rate limitations. Arcus stated that the shortfall has been fully covered by their finances, and the withdrawal service has now returned to normal.