Hack history / 2022 / Hack or exploit
Umbrella Network
Hack or exploit on Mar 20, 2022 · Improper Access Control
ATTACK TX CONFIRMED ON CHAINSOURCES AGREE ON DATE AND LOSS · 3 SOURCES
Lost
$700K
dollars at the time
Returned
none listed
as the sources state it
Rank
#1,050
among thefts by dollars lost
What happened
Umbrella Network's Polar Stream staking contracts on Ethereum and BSC suffered an unchecked underflow in the withdrawal function. The attacker drained LP tokens and used them to withdraw liquidity from UMB-ETH Uniswap and UMB-BNB Pancakeswap pools.
Details
- Date
- Mar 20, 2022
- Kind
- Hack or exploit
- Method
- Improper Access Control
- How in
- Smart contract bug
- Target
- DeFi protocol
- Chains
- Ethereum, BNB Chain
Reported by
Related incidents
Umbrella Network 2021 · Hack or exploit · undisclosed
Mirror 2022 · Hack or exploit · $88M
Wintermute 2022 · Hack or exploit · $17.6M
Crema Finance 2022 · Hack or exploit · $8.8M
Ankr 2022 · Hack or exploit · $5M
Mirror 2022 · Hack or exploit · $88M
Wintermute 2022 · Hack or exploit · $17.6M
Crema Finance 2022 · Hack or exploit · $8.8M
Ankr 2022 · Hack or exploit · $5M
Cite this page
SwanBluechip, "Umbrella Network hack, Mar 20, 2022: $700K lost", Crypto hack history, https://swan-hack-tracker.pages.dev/history/i/ht99917c6a68/ (data as of 2026-10-31).