Perpetual DEX El Dorado Exchange (EDE) attackers posted information on the chain saying, "The developers implemented a backdoor that allowed them to force liquidate any position they wanted. This malicious activity involves deliberately signing incorrect prices in order to manipulate users' positions and steal their funds, to stop attacks on users, (I) launched a white hat operation to expose this issue. All transactions executed were made using prices signed/generated by the developers, anyone can Use these prices to easily empty the entire ELP pool in just a few transactions.
At the same time, the attacker said, "If the developer admits to manipulating the price, the funds will be returned and 10% of the pool value at the time will be charged as a white hat fee. In order to minimize the direct impact on liquidity providers, I stopped the white hat operation after reaching 20% of the pool value, but the entire pool is always at risk. I would also like to take this opportunity to reveal other vulnerabilities (provided you agree to the above terms)."