What happened
On August 4, 2021, Casper DeFi reported that its Solidity developer used a retained backdoor to regain control of the Casper token contract, mint 200,200,000 tokens, and sell them on SpiritSwap. The team reported a 99 percent-plus price collapse and 172,411.75 dollars in stolen Casper tokens. It said the proceeds were swapped to WFTM, converted largely to BNB, and bridged to BNB Chain.
How it happened
- The team said a developer had transferred ownership to the company wallet but left code that could regain control of the token contract.
- That backdoor was used to mint 200,000 Casper tokens and then another 200,000,000 Casper tokens.
- The minted tokens were sold on SpiritSwap, collapsing the token price.
- The team reported that proceeds moved through WFTM and BNB before the BNB was bridged to BNB Chain.
Protocol details
Classification
Yield Aggregator
Protocol Type
Exploit/Other
Affected asset / contract
CASPER
Protocol links
Website
@CasperTracker
Funds Recovery
Recovered
$190K
Net Loss
$0
Evidence
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