Detail Analysis
Date:
Status:
Count:
Contributor:
November 30, 2021
Verified
1
zerofriction.io
Loss Amount:
31,000,000
Recovered Amount:
-
Currency:
Dollars,WETH, MATIC, WBTC, LINK, GHST, DUCK, MIM and IMX
KYC By:
Audit By:
None
Halborn, Peckshield
Website:
Twitter:
Discord:
Telegram:
Medium:
Github:
No data
Key Indicators
Platform:
Type:
Category:
Method:
Ethereum, Polygon
Protocol
Dexes
Contract Vulnerabilities
Extended Method:
Logic error
Data Sources:
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. The hacker exploited the MonoX protocol because the same token is used for the tokenIn and tokenOut functions. Since they were able to use the same tokens in the swapTokenFORExactToken function, the updated tokenOut will supersede the tokenIn’s price update. This led MONO token price to increase and be used to purchase most of the assets in the protocol.
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