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Create a few empty markets, and two transactions drain six options vaultsAt around 11:15 a.m. Beijing time on November 1, collateral was drained from six vaults belonging to the Arbitrum options protocol Premia in two transactions just one second apart. Blockaid estimated the loss at about $400,500 while the attack was underway; The Defiant put it at about $437,000 based on net on-chain outflows; and PeckShield reported about $464,600. The three figures differ only because they were calculated at different times; there is no dispute over what was lost.
Premia’s vaults serve as counterparties for options. Depositors put tokens in, buyers pay premiums, and the vaults take on the obligation to pay out at expiry. The six vaults that were drained covered WBTC, WETH, and ARB calls and puts. Net on-chain outflows were 3.644 WBTC, 43.47 WETH, 48,479 USDC.e, and 46,215 ARB.
Create a few empty markets, and two transactions drain six options vaults
At around 11:15 a.m. Beijing time on November 1, collateral was drained from six vaults belonging to the Arbitrum options protocol Premia in two transactions just one second apart. Blockaid estimated the loss at about $400,500 while the attack was underway; The Defiant put it at about $437,000 based on net on-chain outflows; and PeckShield reported about $464,600. The three figures differ only because they were calculated at different times; there is no dispute over what was lost.
Premia’s vaults serve as counterparties for options. Depositors put tokens in, buyers pay premiums, and the vaults take on the obligation to pay out at expiry. The six vaults that were drained covered WBTC, WETH, and ARB calls and puts. Net on-chain outflows were 3.644 WBTC, 43.47 WETH, 48,479 USDC.e, and 46,215 ARB.
Premia’s vaults serve as counterparties for options. Depositors put tokens in, buyers pay premiums, and the vaults take on the obligation to pay out at expiry. The six vaults that were drained covered WBTC, WETH, and ARB calls and puts. Net on-chain outflows were 3.644 WBTC, 43.47 WETH, 48,479 USDC.e, and 46,215 ARB.
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Premia on Arbitrum: two estimates for the same incident
On November 1, 2026, Blockaid warned of an exploit affecting Premia, an options protocol on Arbitrum. Its initial alert estimated that approximately $400,500 had been withdrawn from the vaults in about two transactions.
Later, PeckShield published an estimate of $464,600. These are estimates of the same incident: they should not be added together or interpreted, on their own, as evidence of further thefts. The sources do not explain how to reconcile the two figures.
Blockaid described the attack as ongoing when it issued its alert. That dated notice does not establish that the attack is still ongoing or that the funds have been recovered.
For context, Premia distinguishes between the options protocol and the vaults, which add automated strategies through smart contracts. Automating a strategy does not eliminate the risk of flaws in those contracts.
The transaction linked by Blockaid involves USDC.e: a version of USDC bridged from Ethereum, distinct from native USDC. On Arbitrum, ARB is used for governance and ETH pays transaction fees.
Public data: on November 2 at 00:32 UTC, Binance spot showed ARB at 0.1641 USDT (+0.122% over 24 hours) and ETH at 2,273.76 USDT (+0.681%).
Market perspective: these price changes do not measure depositors’ losses or prove a reaction to the incident. Assessing risk in the vaults depends on the confirmed scope, containment measures, and the terms of any recovery. The notices reviewed do not confirm a refund.
$ARB $ETH $USDC
Educational content. Not financial advice.
#Premia #Arbitrum #DeFi #SeguridadCripto #EducacionFinanciera
Premia on Arbitrum: two estimates for the same incident
On November 1, 2026, Blockaid warned of an exploit affecting Premia, an options protocol on Arbitrum. Its initial alert estimated that approximately $400,500 had been withdrawn from the vaults in about two transactions.
Later, PeckShield published an estimate of $464,600. These are estimates of the same incident: they should not be added together or interpreted, on their own, as evidence of further thefts. The sources do not explain how to reconcile the two figures.
Blockaid described the attack as ongoing when it issued its alert. That dated notice does not establish that the attack is still ongoing or that the funds have been recovered.
For context, Premia distinguishes between the options protocol and the vaults, which add automated strategies through smart contracts. Automating a strategy does not eliminate the risk of flaws in those contracts.
The transaction linked by Blockaid involves USDC.e: a version of USDC bridged from Ethereum, distinct from native USDC. On Arbitrum, ARB is used for governance and ETH pays transaction fees.
Public data: on November 2 at 00:32 UTC, Binance spot showed ARB at 0.1641 USDT (+0.122% over 24 hours) and ETH at 2,273.76 USDT (+0.681%).
Market perspective: these price changes do not measure depositors’ losses or prove a reaction to the incident. Assessing risk in the vaults depends on the confirmed scope, containment measures, and the terms of any recovery. The notices reviewed do not confirm a refund.
$ARB $ETH $USDC
Educational content. Not financial advice.
#Premia #Arbitrum #DeFi #SeguridadCripto #EducacionFinanciera
On November 1, 2026, Blockaid warned of an exploit affecting Premia, an options protocol on Arbitrum. Its initial alert estimated that approximately $400,500 had been withdrawn from the vaults in about two transactions.
Later, PeckShield published an estimate of $464,600. These are estimates of the same incident: they should not be added together or interpreted, on their own, as evidence of further thefts. The sources do not explain how to reconcile the two figures.
Blockaid described the attack as ongoing when it issued its alert. That dated notice does not establish that the attack is still ongoing or that the funds have been recovered.
For context, Premia distinguishes between the options protocol and the vaults, which add automated strategies through smart contracts. Automating a strategy does not eliminate the risk of flaws in those contracts.
The transaction linked by Blockaid involves USDC.e: a version of USDC bridged from Ethereum, distinct from native USDC. On Arbitrum, ARB is used for governance and ETH pays transaction fees.
Public data: on November 2 at 00:32 UTC, Binance spot showed ARB at 0.1641 USDT (+0.122% over 24 hours) and ETH at 2,273.76 USDT (+0.681%).
Market perspective: these price changes do not measure depositors’ losses or prove a reaction to the incident. Assessing risk in the vaults depends on the confirmed scope, containment measures, and the terms of any recovery. The notices reviewed do not confirm a refund.
$ARB $ETH $USDC
Educational content. Not financial advice.
#Premia #Arbitrum #DeFi #SeguridadCripto #EducacionFinanciera
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Blockaid alert: Premia option vaults on Arbitrum were drained using empty pools and flash loans. Initial loss estimates exceed $400,000, though the final tally may differ. The incident affects specific vaults, not the entire Arbitrum network. Are you following the team’s announcements before interacting? 🔐⚠️⛓️ $ARB #DeFi #Premia
Blockaid alert: Premia option vaults on Arbitrum were drained using empty pools and flash loans. Initial loss estimates exceed $400,000, though the final tally may differ. The incident affects specific vaults, not the entire Arbitrum network. Are you following the team’s announcements before interacting? 🔐⚠️⛓️ $ARB #DeFi #Premia
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