Root-cause analysis not yet published. The incident description below contains all currently available signal — review the attack transaction directly for definitive forensics.
Reproducible Foundry test fork from SunWeb3Sec/DeFiHackLabs. Clone the repo, run forge test against the file path above, and replay the exploit against a mainnet fork at the historical block. Use for reproduction only — not for live targets.
On March 20, 2022, Uno Re’s partner- Umbrella Network announced that the LP tokens staked in their Polar Stream staking contracts on Ethereum and BNB Chain are drained from both of the contracts. Reportedly, the hacker then withdrew liquidity using those stolen LP tokens from both the UMB-ETH Uniswap and the UMB-BNB Pancakeswap pools. Reported loss: $700,000.
- chain
- ethereum
- protocol
- Umbrella Network
- bug_class
- unknown
- date_occurred
- 2022-03-20
- loss_usd
- $700,000
- source_id
- cs:umbrella-network::2022-03-20