Papertrade Trader Nets $1.28M by Exploiting Hyperliquid ETH Pricing
What happened: A trader exploited the pricing mechanism on the newly launched Papertrade exchange to net approximately $1.
What happened: A trader exploited the pricing mechanism on the newly launched Papertrade exchange to net approximately $1.28 million within hours of its October 11 debut. By manipulating ETH prices on Hyperliquid, the trader executed 305 trades—296 of them profitable—before losing $450,000 on a series of high-leverage shorts that were liquidated. Papertrade, which offers up to 1,000x leverage and a $5 million liquidity pool, responded by tightening open-interest caps after the exploit.
Why it matters: The incident highlights persistent vulnerabilities in DeFi platform design, particularly when price feeds are directly linked to external order books. Papertrade's own documentation reportedly warned of such risks pre-launch, raising questions about platform accountability. The rapid response to cap trading limits signals a reactive rather than proactive approach to risk management in high-leverage environments.
Source: The Block