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.
The automatic market maker protocol MonoX was hacked. In this attack, approximately US$18.2 million worth of WETH and 10.5 million US dollars of MATIC were stolen. Other stolen tokens included WBTC, LINK, GHST, DUCK, MIM and IMX. The total loss was approximately 31 million U.S. dollars. Attack method (per SlowMist): Price Update Issue. Reported loss: $ 31,000,000.
- chain
- —
- protocol
- MonoX
- bug_class
- unknown
- date_occurred
- 2021-11-30
- loss_usd
- $31,000,000
- source_id
- sm:monox::2021-11-30