Volo, a SUI-based liquid staking protocol, announced via X, "We suffered a loss of approximately $3.5 million worth of assets including WBTC, XAUm, and USDC due to an exploit attack this morning." They added, "Immediately upon detecting the attack, we notified the Sui Foundation and ecosystem partners and froze the vaults to prevent further damage. The damage was limited to three specific vaults, and no common attack vector was found with the remaining vaults. Approximately $28 million deposited in the remaining vaults are safe. We will do our best not to pass on the losses to users."